21871179

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{1277}}^1$

素因数の和:1467

約数の個数: 24

約数和(自身を含む): 34690032

約数和(自身を除く): 12818853

約数列:

[1, 3, 9, 11, 33, 99, 173, 519, 1277, 1557, 1903, 3831, 5709, 11493, 14047, 17127, 42141, 126423, 220921, 662763, 1988289, 2430131, 7290393, 21871179]

約数ペア:

[(1, 21871179), (3, 7290393), (9, 2430131), (11, 1988289), (33, 662763), (99, 220921), (173, 126423), (519, 42141), (1277, 17127), (1557, 14047), (1903, 11493), (3831, 5709)]