20856815

素因数分解:

$5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{9769}}^1$

素因数の和:9842

約数の個数: 16

約数和(自身を含む): 29075520

約数和(自身を除く): 8218705

約数列:

[1, 5, 7, 35, 61, 305, 427, 2135, 9769, 48845, 68383, 341915, 595909, 2979545, 4171363, 20856815]

約数ペア:

[(1, 20856815), (5, 4171363), (7, 2979545), (35, 595909), (61, 341915), (305, 68383), (427, 48845), (2135, 9769)]