620173520

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{1297}}^1$

素因数の和:1492

約数の個数: 80

約数和(自身を含む): 1487196480

約数和(自身を除く): 867022960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 139, 172, 215, 278, 344, 430, 556, 688, 695, 860, 1112, 1297, 1390, 1720, 2224, 2594, 2780, 3440, 5188, 5560, 5977, 6485, 10376, 11120, 11954, 12970, 20752, 23908, 25940, 29885, 47816, 51880, 55771, 59770, 95632, 103760, 111542, 119540, 180283, 223084, 239080, 278855, 360566, 446168, 478160, 557710, 721132, 892336, 901415, 1115420, 1442264, 1802830, 2230840, 2884528, 3605660, 4461680, 7211320, 7752169, 14422640, 15504338, 31008676, 38760845, 62017352, 77521690, 124034704, 155043380, 310086760, 620173520]

約数ペア:

[(1, 620173520), (2, 310086760), (4, 155043380), (5, 124034704), (8, 77521690), (10, 62017352), (16, 38760845), (20, 31008676), (40, 15504338), (43, 14422640), (80, 7752169), (86, 7211320), (139, 4461680), (172, 3605660), (215, 2884528), (278, 2230840), (344, 1802830), (430, 1442264), (556, 1115420), (688, 901415), (695, 892336), (860, 721132), (1112, 557710), (1297, 478160), (1390, 446168), (1720, 360566), (2224, 278855), (2594, 239080), (2780, 223084), (3440, 180283), (5188, 119540), (5560, 111542), (5977, 103760), (6485, 95632), (10376, 59770), (11120, 55771), (11954, 51880), (12970, 47816), (20752, 29885), (23908, 25940)]