21008104

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{202001}}^1$

素因数の和:202020

約数の個数: 16

約数和(自身を含む): 42420420

約数和(自身を除く): 21412316

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 202001, 404002, 808004, 1616008, 2626013, 5252026, 10504052, 21008104]

約数ペア:

[(1, 21008104), (2, 10504052), (4, 5252026), (8, 2626013), (13, 1616008), (26, 808004), (52, 404002), (104, 202001)]