9980905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2039}}^1$

素因数の和:2144

約数の個数: 16

約数和(自身を含む): 13219200

約数和(自身を除く): 3238295

約数列:

[1, 5, 11, 55, 89, 445, 979, 2039, 4895, 10195, 22429, 112145, 181471, 907355, 1996181, 9980905]

約数ペア:

[(1, 9980905), (5, 1996181), (11, 907355), (55, 181471), (89, 112145), (445, 22429), (979, 10195), (2039, 4895)]