20863240

素因数分解:

$2^3\times 5^1\times {\mathrm{521581}}^1$

素因数の和:521592

約数の個数: 16

約数和(自身を含む): 46942380

約数和(自身を除く): 26079140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 521581, 1043162, 2086324, 2607905, 4172648, 5215810, 10431620, 20863240]

約数ペア:

[(1, 20863240), (2, 10431620), (4, 5215810), (5, 4172648), (8, 2607905), (10, 2086324), (20, 1043162), (40, 521581)]