17988971

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17971}}^1$

素因数の和:18002

約数の個数: 16

約数和(自身を含む): 24154368

約数和(自身を除く): 6165397

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 17971, 125797, 197681, 233623, 1383767, 1635361, 2569853, 17988971]

約数ペア:

[(1, 17988971), (7, 2569853), (11, 1635361), (13, 1383767), (77, 233623), (91, 197681), (143, 125797), (1001, 17971)]