21004669

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1\times {\mathrm{449}}^1$

素因数の和:660

約数の個数: 16

約数和(自身を含む): 24796800

約数和(自身を除く): 3792131

約数列:

[1, 7, 41, 163, 287, 449, 1141, 3143, 6683, 18409, 46781, 73187, 128863, 512309, 3000667, 21004669]

約数ペア:

[(1, 21004669), (7, 3000667), (41, 512309), (163, 128863), (287, 73187), (449, 46781), (1141, 18409), (3143, 6683)]