21683915

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{3617}}^1$

素因数の和:3742

約数の個数: 16

約数和(自身を含む): 28654560

約数和(自身を除く): 6970645

約数列:

[1, 5, 11, 55, 109, 545, 1199, 3617, 5995, 18085, 39787, 198935, 394253, 1971265, 4336783, 21683915]

約数ペア:

[(1, 21683915), (5, 4336783), (11, 1971265), (55, 394253), (109, 198935), (545, 39787), (1199, 18085), (3617, 5995)]