18208660

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{12823}}^1$

素因数の和:12903

約数の個数: 24

約数和(自身を含む): 38779776

約数和(自身を除く): 20571116

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 12823, 25646, 51292, 64115, 128230, 256460, 910433, 1820866, 3641732, 4552165, 9104330, 18208660]

約数ペア:

[(1, 18208660), (2, 9104330), (4, 4552165), (5, 3641732), (10, 1820866), (20, 910433), (71, 256460), (142, 128230), (284, 64115), (355, 51292), (710, 25646), (1420, 12823)]