20858390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{15683}}^1$

素因数の和:15716

約数の個数: 32

約数和(自身を含む): 45169920

約数和(自身を除く): 24311530

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 133, 190, 266, 665, 1330, 15683, 31366, 78415, 109781, 156830, 219562, 297977, 548905, 595954, 1097810, 1489885, 2085839, 2979770, 4171678, 10429195, 20858390]

約数ペア:

[(1, 20858390), (2, 10429195), (5, 4171678), (7, 2979770), (10, 2085839), (14, 1489885), (19, 1097810), (35, 595954), (38, 548905), (70, 297977), (95, 219562), (133, 156830), (190, 109781), (266, 78415), (665, 31366), (1330, 15683)]