21854540

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^3$

素因数の和:318

約数の個数: 24

約数和(自身を含む): 46344480

約数和(自身を除く): 24489940

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 10609, 21218, 42436, 53045, 106090, 212180, 1092727, 2185454, 4370908, 5463635, 10927270, 21854540]

約数ペア:

[(1, 21854540), (2, 10927270), (4, 5463635), (5, 4370908), (10, 2185454), (20, 1092727), (103, 212180), (206, 106090), (412, 53045), (515, 42436), (1030, 21218), (2060, 10609)]