19918899840

素因数分解:

$2^7\times 3^1\times 5^1\times 7^2\times {\mathrm{211723}}^1$

素因数の和:211759

約数の個数: 192

約数和(自身を含む): 73857800160

約数和(自身を除く): 53938900320

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, 140, 147, 160, 168, 192, 196, 210, 224, 240, 245, 280, 294, 320, 336, 384, 392, 420, 448, 480, 490, 560, 588, 640, 672, 735, 784, 840, 896, 960, 980, 1120, 1176, 1344, 1470, 1568, 1680, 1920, 1960, 2240, 2352, 2688, 2940, 3136, 3360, 3920, 4480, 4704, 5880, 6272, 6720, 7840, 9408, 11760, 13440, 15680, 18816, 23520, 31360, 47040, 94080, 211723, 423446, 635169, 846892, 1058615, 1270338, 1482061, 1693784, 2117230, 2540676, 2964122, 3175845, 3387568, 4234460, 4446183, 5081352, 5928244, 6351690, 6775136, 7410305, 8468920, 8892366, 10162704, 10374427, 11856488, 12703380, 13550272, 14820610, 16937840, 17784732, 20325408, 20748854, 22230915, 23712976, 25406760, 27100544, 29641220, 31123281, 33875680, 35569464, 40650816, 41497708, 44461830, 47425952, 50813520, 51872135, 59282440, 62246562, 67751360, 71138928, 81301632, 82995416, 88923660, 94851904, 101627040, 103744270, 118564880, 124493124, 135502720, 142277856, 155616405, 165990832, 177847320, 189703808, 203254080, 207488540, 237129760, 248986248, 284555712, 311232810, 331981664, 355694640, 406508160, 414977080, 474259520, 497972496, 569111424, 622465620, 663963328, 711389280, 829954160, 948519040, 995944992, 1244931240, 1327926656, 1422778560, 1659908320, 1991889984, 2489862480, 2845557120, 3319816640, 3983779968, 4979724960, 6639633280, 9959449920, 19918899840]

約数ペア:

[(1, 19918899840), (2, 9959449920), (3, 6639633280), (4, 4979724960), (5, 3983779968), (6, 3319816640), (7, 2845557120), (8, 2489862480), (10, 1991889984), (12, 1659908320), (14, 1422778560), (15, 1327926656), (16, 1244931240), (20, 995944992), (21, 948519040), (24, 829954160), (28, 711389280), (30, 663963328), (32, 622465620), (35, 569111424), (40, 497972496), (42, 474259520), (48, 414977080), (49, 406508160), (56, 355694640), (60, 331981664), (64, 311232810), (70, 284555712), (80, 248986248), (84, 237129760), (96, 207488540), (98, 203254080), (105, 189703808), (112, 177847320), (120, 165990832), (128, 155616405), (140, 142277856), (147, 135502720), (160, 124493124), (168, 118564880), (192, 103744270), (196, 101627040), (210, 94851904), (224, 88923660), (240, 82995416), (245, 81301632), (280, 71138928), (294, 67751360), (320, 62246562), (336, 59282440), (384, 51872135), (392, 50813520), (420, 47425952), (448, 44461830), (480, 41497708), (490, 40650816), (560, 35569464), (588, 33875680), (640, 31123281), (672, 29641220), (735, 27100544), (784, 25406760), (840, 23712976), (896, 22230915), (960, 20748854), (980, 20325408), (1120, 17784732), (1176, 16937840), (1344, 14820610), (1470, 13550272), (1568, 12703380), (1680, 11856488), (1920, 10374427), (1960, 10162704), (2240, 8892366), (2352, 8468920), (2688, 7410305), (2940, 6775136), (3136, 6351690), (3360, 5928244), (3920, 5081352), (4480, 4446183), (4704, 4234460), (5880, 3387568), (6272, 3175845), (6720, 2964122), (7840, 2540676), (9408, 2117230), (11760, 1693784), (13440, 1482061), (15680, 1270338), (18816, 1058615), (23520, 846892), (31360, 635169), (47040, 423446), (94080, 211723)]