20701017

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{359}}^1$

素因数の和:557

約数の個数: 24

約数和(自身を含む): 30888000

約数和(自身を除く): 10186983

約数列:

[1, 3, 9, 43, 129, 149, 359, 387, 447, 1077, 1341, 3231, 6407, 15437, 19221, 46311, 53491, 57663, 138933, 160473, 481419, 2300113, 6900339, 20701017]

約数ペア:

[(1, 20701017), (3, 6900339), (9, 2300113), (43, 481419), (129, 160473), (149, 138933), (359, 57663), (387, 53491), (447, 46311), (1077, 19221), (1341, 15437), (3231, 6407)]