66566680

素因数分解:

$2^3\times 5^1\times {\mathrm{821}}^1\times {\mathrm{2027}}^1$

素因数の和:2859

約数の個数: 32

約数和(自身を含む): 150031440

約数和(自身を除く): 83464760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 821, 1642, 2027, 3284, 4054, 4105, 6568, 8108, 8210, 10135, 16216, 16420, 20270, 32840, 40540, 81080, 1664167, 3328334, 6656668, 8320835, 13313336, 16641670, 33283340, 66566680]

約数ペア:

[(1, 66566680), (2, 33283340), (4, 16641670), (5, 13313336), (8, 8320835), (10, 6656668), (20, 3328334), (40, 1664167), (821, 81080), (1642, 40540), (2027, 32840), (3284, 20270), (4054, 16420), (4105, 16216), (6568, 10135), (8108, 8210)]