81256360

素因数分解:

$2^3\times 5^1\times {\mathrm{2031409}}^1$

素因数の和:2031420

約数の個数: 16

約数和(自身を含む): 182826900

約数和(自身を除く): 101570540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2031409, 4062818, 8125636, 10157045, 16251272, 20314090, 40628180, 81256360]

約数ペア:

[(1, 81256360), (2, 40628180), (4, 20314090), (5, 16251272), (8, 10157045), (10, 8125636), (20, 4062818), (40, 2031409)]