21278490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{709283}}^1$

素因数の和:709293

約数の個数: 16

約数和(自身を含む): 51068448

約数和(自身を除く): 29789958

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 709283, 1418566, 2127849, 3546415, 4255698, 7092830, 10639245, 21278490]

約数ペア:

[(1, 21278490), (2, 10639245), (3, 7092830), (5, 4255698), (6, 3546415), (10, 2127849), (15, 1418566), (30, 709283)]