21670180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{154787}}^1$

素因数の和:154803

約数の個数: 24

約数和(自身を含む): 52008768

約数和(自身を除く): 30338588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 154787, 309574, 619148, 773935, 1083509, 1547870, 2167018, 3095740, 4334036, 5417545, 10835090, 21670180]

約数ペア:

[(1, 21670180), (2, 10835090), (4, 5417545), (5, 4334036), (7, 3095740), (10, 2167018), (14, 1547870), (20, 1083509), (28, 773935), (35, 619148), (70, 309574), (140, 154787)]