64870480

素因数分解:

$2^4\times 5^1\times {\mathrm{810881}}^1$

素因数の和:810894

約数の個数: 20

約数和(自身を含む): 150824052

約数和(自身を除く): 85953572

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 810881, 1621762, 3243524, 4054405, 6487048, 8108810, 12974096, 16217620, 32435240, 64870480]

約数ペア:

[(1, 64870480), (2, 32435240), (4, 16217620), (5, 12974096), (8, 8108810), (10, 6487048), (16, 4054405), (20, 3243524), (40, 1621762), (80, 810881)]