21001980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{350033}}^1$

素因数の和:350045

約数の個数: 24

約数和(自身を含む): 58805712

約数和(自身を除く): 37803732

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 350033, 700066, 1050099, 1400132, 1750165, 2100198, 3500330, 4200396, 5250495, 7000660, 10500990, 21001980]

約数ペア:

[(1, 21001980), (2, 10500990), (3, 7000660), (4, 5250495), (5, 4200396), (6, 3500330), (10, 2100198), (12, 1750165), (15, 1400132), (20, 1050099), (30, 700066), (60, 350033)]