21821195

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{13681}}^1$

素因数の和:13726

約数の個数: 16

約数和(自身を含む): 29553120

約数和(自身を除く): 7731925

約数列:

[1, 5, 11, 29, 55, 145, 319, 1595, 13681, 68405, 150491, 396749, 752455, 1983745, 4364239, 21821195]

約数ペア:

[(1, 21821195), (5, 4364239), (11, 1983745), (29, 752455), (55, 396749), (145, 150491), (319, 68405), (1595, 13681)]