20018025

素因数分解:

$3^2\times 5^2\times {\mathrm{88969}}^1$

素因数の和:88985

約数の個数: 18

約数和(自身を含む): 35854910

約数和(自身を除く): 15836885

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 88969, 266907, 444845, 800721, 1334535, 2224225, 4003605, 6672675, 20018025]

約数ペア:

[(1, 20018025), (3, 6672675), (5, 4003605), (9, 2224225), (15, 1334535), (25, 800721), (45, 444845), (75, 266907), (225, 88969)]