20095640

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2381}}^1$

素因数の和:2603

約数の個数: 32

約数和(自身を含む): 45448560

約数和(自身を除く): 25352920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 2381, 4220, 4762, 8440, 9524, 11905, 19048, 23810, 47620, 95240, 502391, 1004782, 2009564, 2511955, 4019128, 5023910, 10047820, 20095640]

約数ペア:

[(1, 20095640), (2, 10047820), (4, 5023910), (5, 4019128), (8, 2511955), (10, 2009564), (20, 1004782), (40, 502391), (211, 95240), (422, 47620), (844, 23810), (1055, 19048), (1688, 11905), (2110, 9524), (2381, 8440), (4220, 4762)]