21271615

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{719}}^1$

素因数の和:882

約数の個数: 16

約数和(自身を含む): 26248320

約数和(自身を除く): 4976705

約数列:

[1, 5, 61, 97, 305, 485, 719, 3595, 5917, 29585, 43859, 69743, 219295, 348715, 4254323, 21271615]

約数ペア:

[(1, 21271615), (5, 4254323), (61, 348715), (97, 219295), (305, 69743), (485, 43859), (719, 29585), (3595, 5917)]