20457315

素因数分解:

$3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2789}}^1$

素因数の和:2963

約数の個数: 24

約数和(自身を含む): 35689680

約数和(自身を除く): 15232365

約数列:

[1, 3, 5, 9, 15, 45, 163, 489, 815, 1467, 2445, 2789, 7335, 8367, 13945, 25101, 41835, 125505, 454607, 1363821, 2273035, 4091463, 6819105, 20457315]

約数ペア:

[(1, 20457315), (3, 6819105), (5, 4091463), (9, 2273035), (15, 1363821), (45, 454607), (163, 125505), (489, 41835), (815, 25101), (1467, 13945), (2445, 8367), (2789, 7335)]