640778880

素因数分解:

$2^7\times 3^1\times 5^1\times 7^4\times {\mathrm{139}}^1$

素因数の和:189

約数の個数: 320

約数和(自身を含む): 2399896800

約数和(自身を除く): 1759117920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 64, 70, 80, 84, 96, 98, 105, 112, 120, 128, 139, 140, 147, 160, 168, 192, 196, 210, 224, 240, 245, 278, 280, 294, 320, 336, 343, 384, 392, 417, 420, 448, 480, 490, 556, 560, 588, 640, 672, 686, 695, 735, 784, 834, 840, 896, 960, 973, 980, 1029, 1112, 1120, 1176, 1344, 1372, 1390, 1470, 1568, 1668, 1680, 1715, 1920, 1946, 1960, 2058, 2085, 2224, 2240, 2352, 2401, 2688, 2744, 2780, 2919, 2940, 3136, 3336, 3360, 3430, 3892, 3920, 4116, 4170, 4448, 4480, 4704, 4802, 4865, 5145, 5488, 5560, 5838, 5880, 6272, 6672, 6720, 6811, 6860, 7203, 7784, 7840, 8232, 8340, 8896, 9408, 9604, 9730, 10290, 10976, 11120, 11676, 11760, 12005, 13344, 13440, 13622, 13720, 14406, 14595, 15568, 15680, 16464, 16680, 17792, 18816, 19208, 19460, 20433, 20580, 21952, 22240, 23352, 23520, 24010, 26688, 27244, 27440, 28812, 29190, 31136, 31360, 32928, 33360, 34055, 36015, 38416, 38920, 40866, 41160, 43904, 44480, 46704, 47040, 47677, 48020, 53376, 54488, 54880, 57624, 58380, 62272, 65856, 66720, 68110, 72030, 76832, 77840, 81732, 82320, 88960, 93408, 94080, 95354, 96040, 102165, 108976, 109760, 115248, 116760, 124544, 131712, 133440, 136220, 143031, 144060, 153664, 155680, 163464, 164640, 186816, 190708, 192080, 204330, 217952, 219520, 230496, 233520, 238385, 266880, 272440, 286062, 288120, 307328, 311360, 326928, 329280, 333739, 373632, 381416, 384160, 408660, 435904, 460992, 467040, 476770, 544880, 572124, 576240, 622720, 653856, 658560, 667478, 715155, 762832, 768320, 817320, 871808, 921984, 934080, 953540, 1001217, 1089760, 1144248, 1152480, 1307712, 1334956, 1430310, 1525664, 1536640, 1634640, 1668695, 1868160, 1907080, 2002434, 2179520, 2288496, 2304960, 2615424, 2669912, 2860620, 3051328, 3269280, 3337390, 3814160, 4004868, 4359040, 4576992, 4609920, 5006085, 5339824, 5721240, 6102656, 6538560, 6674780, 7628320, 8009736, 9153984, 10012170, 10679648, 11442480, 13077120, 13349560, 15256640, 16019472, 18307968, 20024340, 21359296, 22884960, 26699120, 30513280, 32038944, 40048680, 42718592, 45769920, 53398240, 64077888, 80097360, 91539840, 106796480, 128155776, 160194720, 213592960, 320389440, 640778880]

約数ペア:

[(1, 640778880), (2, 320389440), (3, 213592960), (4, 160194720), (5, 128155776), (6, 106796480), (7, 91539840), (8, 80097360), (10, 64077888), (12, 53398240), (14, 45769920), (15, 42718592), (16, 40048680), (20, 32038944), (21, 30513280), (24, 26699120), (28, 22884960), (30, 21359296), (32, 20024340), (35, 18307968), (40, 16019472), (42, 15256640), (48, 13349560), (49, 13077120), (56, 11442480), (60, 10679648), (64, 10012170), (70, 9153984), (80, 8009736), (84, 7628320), (96, 6674780), (98, 6538560), (105, 6102656), (112, 5721240), (120, 5339824), (128, 5006085), (139, 4609920), (140, 4576992), (147, 4359040), (160, 4004868), (168, 3814160), (192, 3337390), (196, 3269280), (210, 3051328), (224, 2860620), (240, 2669912), (245, 2615424), (278, 2304960), (280, 2288496), (294, 2179520), (320, 2002434), (336, 1907080), (343, 1868160), (384, 1668695), (392, 1634640), (417, 1536640), (420, 1525664), (448, 1430310), (480, 1334956), (490, 1307712), (556, 1152480), (560, 1144248), (588, 1089760), (640, 1001217), (672, 953540), (686, 934080), (695, 921984), (735, 871808), (784, 817320), (834, 768320), (840, 762832), (896, 715155), (960, 667478), (973, 658560), (980, 653856), (1029, 622720), (1112, 576240), (1120, 572124), (1176, 544880), (1344, 476770), (1372, 467040), (1390, 460992), (1470, 435904), (1568, 408660), (1668, 384160), (1680, 381416), (1715, 373632), (1920, 333739), (1946, 329280), (1960, 326928), (2058, 311360), (2085, 307328), (2224, 288120), (2240, 286062), (2352, 272440), (2401, 266880), (2688, 238385), (2744, 233520), (2780, 230496), (2919, 219520), (2940, 217952), (3136, 204330), (3336, 192080), (3360, 190708), (3430, 186816), (3892, 164640), (3920, 163464), (4116, 155680), (4170, 153664), (4448, 144060), (4480, 143031), (4704, 136220), (4802, 133440), (4865, 131712), (5145, 124544), (5488, 116760), (5560, 115248), (5838, 109760), (5880, 108976), (6272, 102165), (6672, 96040), (6720, 95354), (6811, 94080), (6860, 93408), (7203, 88960), (7784, 82320), (7840, 81732), (8232, 77840), (8340, 76832), (8896, 72030), (9408, 68110), (9604, 66720), (9730, 65856), (10290, 62272), (10976, 58380), (11120, 57624), (11676, 54880), (11760, 54488), (12005, 53376), (13344, 48020), (13440, 47677), (13622, 47040), (13720, 46704), (14406, 44480), (14595, 43904), (15568, 41160), (15680, 40866), (16464, 38920), (16680, 38416), (17792, 36015), (18816, 34055), (19208, 33360), (19460, 32928), (20433, 31360), (20580, 31136), (21952, 29190), (22240, 28812), (23352, 27440), (23520, 27244), (24010, 26688)]