20661705

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{19963}}^1$

素因数の和:19997

約数の個数: 24

約数和(自身を含む): 37372608

約数和(自身を除く): 16710903

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 19963, 59889, 99815, 179667, 299445, 459149, 898335, 1377447, 2295745, 4132341, 6887235, 20661705]

約数ペア:

[(1, 20661705), (3, 6887235), (5, 4132341), (9, 2295745), (15, 1377447), (23, 898335), (45, 459149), (69, 299445), (115, 179667), (207, 99815), (345, 59889), (1035, 19963)]