21491105965

素因数分解:

$5^1\times 7^1\times {\mathrm{2417}}^1\times {\mathrm{254047}}^1$

素因数の和:256476

約数の個数: 16

約数和(自身を含む): 29485827072

約数和(自身を除く): 7994721107

約数列:

[1, 5, 7, 35, 2417, 12085, 16919, 84595, 254047, 1270235, 1778329, 8891645, 614031599, 3070157995, 4298221193, 21491105965]

約数ペア:

[(1, 21491105965), (5, 4298221193), (7, 3070157995), (35, 614031599), (2417, 8891645), (12085, 1778329), (16919, 1270235), (84595, 254047)]