31225640

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{1181}}^1$

素因数の和:1853

約数の個数: 32

約数和(自身を含む): 70423560

約数和(自身を除く): 39197920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1181, 1322, 2362, 2644, 3305, 4724, 5288, 5905, 6610, 9448, 11810, 13220, 23620, 26440, 47240, 780641, 1561282, 3122564, 3903205, 6245128, 7806410, 15612820, 31225640]

約数ペア:

[(1, 31225640), (2, 15612820), (4, 7806410), (5, 6245128), (8, 3903205), (10, 3122564), (20, 1561282), (40, 780641), (661, 47240), (1181, 26440), (1322, 23620), (2362, 13220), (2644, 11810), (3305, 9448), (4724, 6610), (5288, 5905)]