21805660

素因数分解:

$2^2\times 5^1\times {\mathrm{359}}^1\times {\mathrm{3037}}^1$

素因数の和:3405

約数の個数: 24

約数和(自身を含む): 45934560

約数和(自身を除く): 24128900

約数列:

[1, 2, 4, 5, 10, 20, 359, 718, 1436, 1795, 3037, 3590, 6074, 7180, 12148, 15185, 30370, 60740, 1090283, 2180566, 4361132, 5451415, 10902830, 21805660]

約数ペア:

[(1, 21805660), (2, 10902830), (4, 5451415), (5, 4361132), (10, 2180566), (20, 1090283), (359, 60740), (718, 30370), (1436, 15185), (1795, 12148), (3037, 7180), (3590, 6074)]