20880795

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{8237}}^1$

素因数の和:8271

約数の個数: 24

約数和(自身を含む): 36181296

約数和(自身を除く): 15300501

約数列:

[1, 3, 5, 13, 15, 39, 65, 169, 195, 507, 845, 2535, 8237, 24711, 41185, 107081, 123555, 321243, 535405, 1392053, 1606215, 4176159, 6960265, 20880795]

約数ペア:

[(1, 20880795), (3, 6960265), (5, 4176159), (13, 1606215), (15, 1392053), (39, 535405), (65, 321243), (169, 123555), (195, 107081), (507, 41185), (845, 24711), (2535, 8237)]