21661820

素因数分解:

$2^2\times 5^1\times {\mathrm{941}}^1\times {\mathrm{1151}}^1$

素因数の和:2101

約数の個数: 24

約数和(自身を含む): 45577728

約数和(自身を除く): 23915908

約数列:

[1, 2, 4, 5, 10, 20, 941, 1151, 1882, 2302, 3764, 4604, 4705, 5755, 9410, 11510, 18820, 23020, 1083091, 2166182, 4332364, 5415455, 10830910, 21661820]

約数ペア:

[(1, 21661820), (2, 10830910), (4, 5415455), (5, 4332364), (10, 2166182), (20, 1083091), (941, 23020), (1151, 18820), (1882, 11510), (2302, 9410), (3764, 5755), (4604, 4705)]