21009070

素因数分解:

$2^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{12889}}^1$

素因数の和:13059

約数の個数: 16

約数和(自身を含む): 38051280

約数和(自身を除く): 17042210

約数列:

[1, 2, 5, 10, 163, 326, 815, 1630, 12889, 25778, 64445, 128890, 2100907, 4201814, 10504535, 21009070]

約数ペア:

[(1, 21009070), (2, 10504535), (5, 4201814), (10, 2100907), (163, 128890), (326, 64445), (815, 25778), (1630, 12889)]