81390850

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{227}}^1$

素因数の和:411

約数の個数: 48

約数和(自身を含む): 155722176

約数和(自身を除く): 74331326

約数列:

[1, 2, 5, 10, 25, 50, 71, 101, 142, 202, 227, 355, 454, 505, 710, 1010, 1135, 1775, 2270, 2525, 3550, 5050, 5675, 7171, 11350, 14342, 16117, 22927, 32234, 35855, 45854, 71710, 80585, 114635, 161170, 179275, 229270, 358550, 402925, 573175, 805850, 1146350, 1627817, 3255634, 8139085, 16278170, 40695425, 81390850]

約数ペア:

[(1, 81390850), (2, 40695425), (5, 16278170), (10, 8139085), (25, 3255634), (50, 1627817), (71, 1146350), (101, 805850), (142, 573175), (202, 402925), (227, 358550), (355, 229270), (454, 179275), (505, 161170), (710, 114635), (1010, 80585), (1135, 71710), (1775, 45854), (2270, 35855), (2525, 32234), (3550, 22927), (5050, 16117), (5675, 14342), (7171, 11350)]