40440020

素因数分解:

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

素因数の和:4411

約数の個数: 24

約数和(自身を含む): 85108968

約数和(自身を除く): 44668948

約数列:

[1, 2, 4, 5, 10, 20, 521, 1042, 2084, 2605, 3881, 5210, 7762, 10420, 15524, 19405, 38810, 77620, 2022001, 4044002, 8088004, 10110005, 20220010, 40440020]

約数ペア:

[(1, 40440020), (2, 20220010), (4, 10110005), (5, 8088004), (10, 4044002), (20, 2022001), (521, 77620), (1042, 38810), (2084, 19405), (2605, 15524), (3881, 10420), (5210, 7762)]