218205640

素因数分解:

$2^3\times 5^1\times {\mathrm{5455141}}^1$

素因数の和:5455152

約数の個数: 16

約数和(自身を含む): 490962780

約数和(自身を除く): 272757140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5455141, 10910282, 21820564, 27275705, 43641128, 54551410, 109102820, 218205640]

約数ペア:

[(1, 218205640), (2, 109102820), (4, 54551410), (5, 43641128), (8, 27275705), (10, 21820564), (20, 10910282), (40, 5455141)]