20858025

素因数分解:

$3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{3917}}^1$

素因数の和:4001

約数の個数: 24

約数和(自身を含む): 34979904

約数和(自身を除く): 14121879

約数列:

[1, 3, 5, 15, 25, 71, 75, 213, 355, 1065, 1775, 3917, 5325, 11751, 19585, 58755, 97925, 278107, 293775, 834321, 1390535, 4171605, 6952675, 20858025]

約数ペア:

[(1, 20858025), (3, 6952675), (5, 4171605), (15, 1390535), (25, 834321), (71, 293775), (75, 278107), (213, 97925), (355, 58755), (1065, 19585), (1775, 11751), (3917, 5325)]