81099020

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{24877}}^1$

素因数の和:25049

約数の個数: 24

約数和(自身を含む): 171359664

約数和(自身を除く): 90260644

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 24877, 49754, 99508, 124385, 248770, 497540, 4054951, 8109902, 16219804, 20274755, 40549510, 81099020]

約数ペア:

[(1, 81099020), (2, 40549510), (4, 20274755), (5, 16219804), (10, 8109902), (20, 4054951), (163, 497540), (326, 248770), (652, 124385), (815, 99508), (1630, 49754), (3260, 24877)]