21228295

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{3541}}^1$

素因数の和:3666

約数の個数: 16

約数和(自身を含む): 28052640

約数和(自身を除く): 6824345

約数列:

[1, 5, 11, 55, 109, 545, 1199, 3541, 5995, 17705, 38951, 194755, 385969, 1929845, 4245659, 21228295]

約数ペア:

[(1, 21228295), (5, 4245659), (11, 1929845), (55, 385969), (109, 194755), (545, 38951), (1199, 17705), (3541, 5995)]