20218166840

素因数分解:

$2^3\times 5^1\times {\mathrm{505454171}}^1$

素因数の和:505454182

約数の個数: 16

約数和(自身を含む): 45490875480

約数和(自身を除く): 25272708640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 505454171, 1010908342, 2021816684, 2527270855, 4043633368, 5054541710, 10109083420, 20218166840]

約数ペア:

[(1, 20218166840), (2, 10109083420), (4, 5054541710), (5, 4043633368), (8, 2527270855), (10, 2021816684), (20, 1010908342), (40, 505454171)]