20312840

素因数分解:

$2^3\times 5^1\times {\mathrm{507821}}^1$

素因数の和:507832

約数の個数: 16

約数和(自身を含む): 45703980

約数和(自身を除く): 25391140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 507821, 1015642, 2031284, 2539105, 4062568, 5078210, 10156420, 20312840]

約数ペア:

[(1, 20312840), (2, 10156420), (4, 5078210), (5, 4062568), (8, 2539105), (10, 2031284), (20, 1015642), (40, 507821)]