198399356

素因数分解:

$2^2\times {\mathrm{409}}^1\times {\mathrm{121271}}^1$

素因数の和:121684

約数の個数: 12

約数和(自身を含む): 348050640

約数和(自身を除く): 149651284

約数列:

[1, 2, 4, 409, 818, 1636, 121271, 242542, 485084, 49599839, 99199678, 198399356]

約数ペア:

[(1, 198399356), (2, 99199678), (4, 49599839), (409, 485084), (818, 242542), (1636, 121271)]