9987719

素因数分解:

$7^2\times {\mathrm{317}}^1\times {\mathrm{643}}^1$

素因数の和:974

約数の個数: 12

約数和(自身を含む): 11673144

約数和(自身を除く): 1685425

約数列:

[1, 7, 49, 317, 643, 2219, 4501, 15533, 31507, 203831, 1426817, 9987719]

約数ペア:

[(1, 9987719), (7, 1426817), (49, 203831), (317, 31507), (643, 15533), (2219, 4501)]