9990211

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{5641}}^1$

素因数の和:5682

約数の個数: 16

約数和(自身を含む): 12999168

約数和(自身を除く): 3008957

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 5641, 39487, 62051, 129743, 434357, 908201, 1427173, 9990211]

約数ペア:

[(1, 9990211), (7, 1427173), (11, 908201), (23, 434357), (77, 129743), (161, 62051), (253, 39487), (1771, 5641)]