21096895

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{1039}}^1$

素因数の和:1206

約数の個数: 16

約数和(自身を含む): 26357760

約数和(自身を除く): 5260865

約数列:

[1, 5, 31, 131, 155, 655, 1039, 4061, 5195, 20305, 32209, 136109, 161045, 680545, 4219379, 21096895]

約数ペア:

[(1, 21096895), (5, 4219379), (31, 680545), (131, 161045), (155, 136109), (655, 32209), (1039, 20305), (4061, 5195)]