21116885

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{1117}}^1$

素因数の和:1340

約数の個数: 16

約数和(自身を含む): 26832000

約数和(自身を除く): 5715115

約数列:

[1, 5, 19, 95, 199, 995, 1117, 3781, 5585, 18905, 21223, 106115, 222283, 1111415, 4223377, 21116885]

約数ペア:

[(1, 21116885), (5, 4223377), (19, 1111415), (95, 222283), (199, 106115), (995, 21223), (1117, 18905), (3781, 5585)]