21000355

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{2309}}^1$

素因数の和:2438

約数の個数: 16

約数和(自身を含む): 26943840

約数和(自身を除く): 5943485

約数列:

[1, 5, 17, 85, 107, 535, 1819, 2309, 9095, 11545, 39253, 196265, 247063, 1235315, 4200071, 21000355]

約数ペア:

[(1, 21000355), (5, 4200071), (17, 1235315), (85, 247063), (107, 196265), (535, 39253), (1819, 11545), (2309, 9095)]