20817765

素因数分解:

$3^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{1759}}^1$

素因数の和:2033

約数の個数: 24

約数和(自身を含む): 36241920

約数和(自身を除く): 15424155

約数列:

[1, 3, 5, 9, 15, 45, 263, 789, 1315, 1759, 2367, 3945, 5277, 8795, 11835, 15831, 26385, 79155, 462617, 1387851, 2313085, 4163553, 6939255, 20817765]

約数ペア:

[(1, 20817765), (3, 6939255), (5, 4163553), (9, 2313085), (15, 1387851), (45, 462617), (263, 79155), (789, 26385), (1315, 15831), (1759, 11835), (2367, 8795), (3945, 5277)]