218386360

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{17443}}^1$

素因数の和:17767

約数の個数: 32

約数和(自身を含む): 492967440

約数和(自身を除く): 274581080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 2504, 3130, 6260, 12520, 17443, 34886, 69772, 87215, 139544, 174430, 348860, 697720, 5459659, 10919318, 21838636, 27298295, 43677272, 54596590, 109193180, 218386360]

約数ペア:

[(1, 218386360), (2, 109193180), (4, 54596590), (5, 43677272), (8, 27298295), (10, 21838636), (20, 10919318), (40, 5459659), (313, 697720), (626, 348860), (1252, 174430), (1565, 139544), (2504, 87215), (3130, 69772), (6260, 34886), (12520, 17443)]