388403725

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{218819}}^1$

素因数の和:218900

約数の個数: 12

約数和(自身を含む): 488406240

約数和(自身を除く): 100002515

約数列:

[1, 5, 25, 71, 355, 1775, 218819, 1094095, 5470475, 15536149, 77680745, 388403725]

約数ペア:

[(1, 388403725), (5, 77680745), (25, 15536149), (71, 5470475), (355, 1094095), (1775, 218819)]