21504485

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{4271}}^1$

素因数の和:4348

約数の個数: 16

約数和(自身を含む): 27682560

約数和(自身を除く): 6178075

約数列:

[1, 5, 19, 53, 95, 265, 1007, 4271, 5035, 21355, 81149, 226363, 405745, 1131815, 4300897, 21504485]

約数ペア:

[(1, 21504485), (5, 4300897), (19, 1131815), (53, 405745), (95, 226363), (265, 81149), (1007, 21355), (4271, 5035)]