81528910

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{198851}}^1$

素因数の和:198899

約数の個数: 16

約数和(自身を含む): 150332112

約数和(自身を除く): 68803202

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 198851, 397702, 994255, 1988510, 8152891, 16305782, 40764455, 81528910]

約数ペア:

[(1, 81528910), (2, 40764455), (5, 16305782), (10, 8152891), (41, 1988510), (82, 994255), (205, 397702), (410, 198851)]