80880040

素因数分解:

$2^3\times 5^1\times {\mathrm{521}}^1\times {\mathrm{3881}}^1$

素因数の和:4413

約数の個数: 32

約数和(自身を含む): 182376360

約数和(自身を除く): 101496320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 521, 1042, 2084, 2605, 3881, 4168, 5210, 7762, 10420, 15524, 19405, 20840, 31048, 38810, 77620, 155240, 2022001, 4044002, 8088004, 10110005, 16176008, 20220010, 40440020, 80880040]

約数ペア:

[(1, 80880040), (2, 40440020), (4, 20220010), (5, 16176008), (8, 10110005), (10, 8088004), (20, 4044002), (40, 2022001), (521, 155240), (1042, 77620), (2084, 38810), (2605, 31048), (3881, 20840), (4168, 19405), (5210, 15524), (7762, 10420)]