21062505

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19777}}^1$

素因数の和:19856

約数の個数: 16

約数和(自身を含む): 34176384

約数和(自身を除く): 13113879

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 19777, 59331, 98885, 296655, 1404167, 4212501, 7020835, 21062505]

約数ペア:

[(1, 21062505), (3, 7020835), (5, 4212501), (15, 1404167), (71, 296655), (213, 98885), (355, 59331), (1065, 19777)]