157220780

素因数分解:

$2^2\times 5^1\times {\mathrm{7861039}}^1$

素因数の和:7861048

約数の個数: 12

約数和(自身を含む): 330163680

約数和(自身を除く): 172942900

約数列:

[1, 2, 4, 5, 10, 20, 7861039, 15722078, 31444156, 39305195, 78610390, 157220780]

約数ペア:

[(1, 157220780), (2, 78610390), (4, 39305195), (5, 31444156), (10, 15722078), (20, 7861039)]