21811153

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{613}}^1$

素因数の和:673

約数の個数: 32

約数和(自身を含む): 29707776

約数和(自身を除く): 7896623

約数列:

[1, 7, 13, 17, 23, 91, 119, 161, 221, 299, 391, 613, 1547, 2093, 2737, 4291, 5083, 7969, 10421, 14099, 35581, 55783, 72947, 98693, 135473, 183287, 239683, 948311, 1283009, 1677781, 3115879, 21811153]

約数ペア:

[(1, 21811153), (7, 3115879), (13, 1677781), (17, 1283009), (23, 948311), (91, 239683), (119, 183287), (161, 135473), (221, 98693), (299, 72947), (391, 55783), (613, 35581), (1547, 14099), (2093, 10421), (2737, 7969), (4291, 5083)]