640230080

素因数分解:

$2^6\times 5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{307}}^1$

素因数の和:364

約数の個数: 224

約数和(自身を含む): 1877568000

約数和(自身を除く): 1237337920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 49, 56, 64, 70, 76, 80, 95, 98, 112, 133, 140, 152, 160, 190, 196, 224, 245, 266, 280, 304, 307, 320, 343, 380, 392, 448, 490, 532, 560, 608, 614, 665, 686, 760, 784, 931, 980, 1064, 1120, 1216, 1228, 1330, 1372, 1520, 1535, 1568, 1715, 1862, 1960, 2128, 2149, 2240, 2456, 2660, 2744, 3040, 3070, 3136, 3430, 3724, 3920, 4256, 4298, 4655, 4912, 5320, 5488, 5833, 6080, 6140, 6517, 6860, 7448, 7840, 8512, 8596, 9310, 9824, 10640, 10745, 10976, 11666, 12280, 13034, 13720, 14896, 15043, 15680, 17192, 18620, 19648, 21280, 21490, 21952, 23332, 24560, 26068, 27440, 29165, 29792, 30086, 32585, 34384, 37240, 40831, 42560, 42980, 46664, 49120, 52136, 54880, 58330, 59584, 60172, 65170, 68768, 74480, 75215, 81662, 85960, 93328, 98240, 104272, 105301, 109760, 116660, 120344, 130340, 137536, 148960, 150430, 163324, 171920, 186656, 204155, 208544, 210602, 233320, 240688, 260680, 285817, 297920, 300860, 326648, 343840, 373312, 408310, 417088, 421204, 466640, 481376, 521360, 526505, 571634, 601720, 653296, 687680, 816620, 842408, 933280, 962752, 1042720, 1053010, 1143268, 1203440, 1306592, 1429085, 1633240, 1684816, 1866560, 2000719, 2085440, 2106020, 2286536, 2406880, 2613184, 2858170, 3266480, 3369632, 4001438, 4212040, 4573072, 4813760, 5716340, 6532960, 6739264, 8002876, 8424080, 9146144, 10003595, 11432680, 13065920, 16005752, 16848160, 18292288, 20007190, 22865360, 32011504, 33696320, 40014380, 45730720, 64023008, 80028760, 91461440, 128046016, 160057520, 320115040, 640230080]

約数ペア:

[(1, 640230080), (2, 320115040), (4, 160057520), (5, 128046016), (7, 91461440), (8, 80028760), (10, 64023008), (14, 45730720), (16, 40014380), (19, 33696320), (20, 32011504), (28, 22865360), (32, 20007190), (35, 18292288), (38, 16848160), (40, 16005752), (49, 13065920), (56, 11432680), (64, 10003595), (70, 9146144), (76, 8424080), (80, 8002876), (95, 6739264), (98, 6532960), (112, 5716340), (133, 4813760), (140, 4573072), (152, 4212040), (160, 4001438), (190, 3369632), (196, 3266480), (224, 2858170), (245, 2613184), (266, 2406880), (280, 2286536), (304, 2106020), (307, 2085440), (320, 2000719), (343, 1866560), (380, 1684816), (392, 1633240), (448, 1429085), (490, 1306592), (532, 1203440), (560, 1143268), (608, 1053010), (614, 1042720), (665, 962752), (686, 933280), (760, 842408), (784, 816620), (931, 687680), (980, 653296), (1064, 601720), (1120, 571634), (1216, 526505), (1228, 521360), (1330, 481376), (1372, 466640), (1520, 421204), (1535, 417088), (1568, 408310), (1715, 373312), (1862, 343840), (1960, 326648), (2128, 300860), (2149, 297920), (2240, 285817), (2456, 260680), (2660, 240688), (2744, 233320), (3040, 210602), (3070, 208544), (3136, 204155), (3430, 186656), (3724, 171920), (3920, 163324), (4256, 150430), (4298, 148960), (4655, 137536), (4912, 130340), (5320, 120344), (5488, 116660), (5833, 109760), (6080, 105301), (6140, 104272), (6517, 98240), (6860, 93328), (7448, 85960), (7840, 81662), (8512, 75215), (8596, 74480), (9310, 68768), (9824, 65170), (10640, 60172), (10745, 59584), (10976, 58330), (11666, 54880), (12280, 52136), (13034, 49120), (13720, 46664), (14896, 42980), (15043, 42560), (15680, 40831), (17192, 37240), (18620, 34384), (19648, 32585), (21280, 30086), (21490, 29792), (21952, 29165), (23332, 27440), (24560, 26068)]