20958860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{80611}}^1$

素因数の和:80633

約数の個数: 24

約数和(自身を含む): 47399856

約数和(自身を除く): 26440996

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 80611, 161222, 322444, 403055, 806110, 1047943, 1612220, 2095886, 4191772, 5239715, 10479430, 20958860]

約数ペア:

[(1, 20958860), (2, 10479430), (4, 5239715), (5, 4191772), (10, 2095886), (13, 1612220), (20, 1047943), (26, 806110), (52, 403055), (65, 322444), (130, 161222), (260, 80611)]