21280595

素因数分解:

$5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{8329}}^1$

素因数の和:8414

約数の個数: 16

約数和(自身を含む): 29588160

約数和(自身を除く): 8307565

約数列:

[1, 5, 7, 35, 73, 365, 511, 2555, 8329, 41645, 58303, 291515, 608017, 3040085, 4256119, 21280595]

約数ペア:

[(1, 21280595), (5, 4256119), (7, 3040085), (35, 608017), (73, 291515), (365, 58303), (511, 41645), (2555, 8329)]