218021680

素因数分解:

$2^4\times 5^1\times {\mathrm{2725271}}^1$

素因数の和:2725284

約数の個数: 20

約数和(自身を含む): 506900592

約数和(自身を除く): 288878912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2725271, 5450542, 10901084, 13626355, 21802168, 27252710, 43604336, 54505420, 109010840, 218021680]

約数ペア:

[(1, 218021680), (2, 109010840), (4, 54505420), (5, 43604336), (8, 27252710), (10, 21802168), (16, 13626355), (20, 10901084), (40, 5450542), (80, 2725271)]