21112660

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{5003}}^1$

素因数の和:5223

約数の個数: 24

約数和(自身を含む): 44555616

約数和(自身を除く): 23442956

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 5003, 10006, 20012, 25015, 50030, 100060, 1055633, 2111266, 4222532, 5278165, 10556330, 21112660]

約数ペア:

[(1, 21112660), (2, 10556330), (4, 5278165), (5, 4222532), (10, 2111266), (20, 1055633), (211, 100060), (422, 50030), (844, 25015), (1055, 20012), (2110, 10006), (4220, 5003)]