642168880

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:291

約数の個数: 160

約数和(自身を含む): 1649894400

約数和(自身を除く): 1007725520

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 43, 68, 79, 80, 85, 86, 136, 139, 158, 170, 172, 215, 272, 278, 316, 340, 344, 395, 430, 556, 632, 680, 688, 695, 731, 790, 860, 1112, 1264, 1343, 1360, 1390, 1462, 1580, 1720, 2224, 2363, 2686, 2780, 2924, 3160, 3397, 3440, 3655, 4726, 5372, 5560, 5848, 5977, 6320, 6715, 6794, 7310, 9452, 10744, 10981, 11120, 11696, 11815, 11954, 13430, 13588, 14620, 16985, 18904, 21488, 21962, 23630, 23908, 26860, 27176, 29240, 29885, 33970, 37808, 43924, 47260, 47816, 53720, 54352, 54905, 57749, 58480, 59770, 67940, 87848, 94520, 95632, 101609, 107440, 109810, 115498, 119540, 135880, 175696, 186677, 189040, 203218, 219620, 230996, 239080, 271760, 288745, 373354, 406436, 439240, 461992, 472183, 478160, 508045, 577490, 746708, 812872, 878480, 923984, 933385, 944366, 1016090, 1154980, 1493416, 1625744, 1866770, 1888732, 2032180, 2309960, 2360915, 2986832, 3733540, 3777464, 4064360, 4619920, 4721830, 7467080, 7554928, 8027111, 8128720, 9443660, 14934160, 16054222, 18887320, 32108444, 37774640, 40135555, 64216888, 80271110, 128433776, 160542220, 321084440, 642168880]

約数ペア:

[(1, 642168880), (2, 321084440), (4, 160542220), (5, 128433776), (8, 80271110), (10, 64216888), (16, 40135555), (17, 37774640), (20, 32108444), (34, 18887320), (40, 16054222), (43, 14934160), (68, 9443660), (79, 8128720), (80, 8027111), (85, 7554928), (86, 7467080), (136, 4721830), (139, 4619920), (158, 4064360), (170, 3777464), (172, 3733540), (215, 2986832), (272, 2360915), (278, 2309960), (316, 2032180), (340, 1888732), (344, 1866770), (395, 1625744), (430, 1493416), (556, 1154980), (632, 1016090), (680, 944366), (688, 933385), (695, 923984), (731, 878480), (790, 812872), (860, 746708), (1112, 577490), (1264, 508045), (1343, 478160), (1360, 472183), (1390, 461992), (1462, 439240), (1580, 406436), (1720, 373354), (2224, 288745), (2363, 271760), (2686, 239080), (2780, 230996), (2924, 219620), (3160, 203218), (3397, 189040), (3440, 186677), (3655, 175696), (4726, 135880), (5372, 119540), (5560, 115498), (5848, 109810), (5977, 107440), (6320, 101609), (6715, 95632), (6794, 94520), (7310, 87848), (9452, 67940), (10744, 59770), (10981, 58480), (11120, 57749), (11696, 54905), (11815, 54352), (11954, 53720), (13430, 47816), (13588, 47260), (14620, 43924), (16985, 37808), (18904, 33970), (21488, 29885), (21962, 29240), (23630, 27176), (23908, 26860)]