9989405

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1\times {\mathrm{151}}^1$

素因数の和:388

約数の個数: 16

約数和(自身を含む): 12279168

約数和(自身を除く): 2289763

約数列:

[1, 5, 101, 131, 151, 505, 655, 755, 13231, 15251, 19781, 66155, 76255, 98905, 1997881, 9989405]

約数ペア:

[(1, 9989405), (5, 1997881), (101, 98905), (131, 76255), (151, 66155), (505, 19781), (655, 15251), (755, 13231)]