40625680

素因数分解:

$2^4\times 5^1\times {\mathrm{507821}}^1$

素因数の和:507834

約数の個数: 20

約数和(自身を含む): 94454892

約数和(自身を除く): 53829212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 507821, 1015642, 2031284, 2539105, 4062568, 5078210, 8125136, 10156420, 20312840, 40625680]

約数ペア:

[(1, 40625680), (2, 20312840), (4, 10156420), (5, 8125136), (8, 5078210), (10, 4062568), (16, 2539105), (20, 2031284), (40, 1015642), (80, 507821)]