208520104

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{2005001}}^1$

素因数の和:2005020

約数の個数: 16

約数和(自身を含む): 421050420

約数和(自身を除く): 212530316

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 2005001, 4010002, 8020004, 16040008, 26065013, 52130026, 104260052, 208520104]

約数ペア:

[(1, 208520104), (2, 104260052), (4, 52130026), (8, 26065013), (13, 16040008), (26, 8020004), (52, 4010002), (104, 2005001)]