28657135

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{10253}}^1$

素因数の和:10314

約数の個数: 16

約数和(自身を含む): 37898784

約数和(自身を除く): 9241649

約数列:

[1, 5, 13, 43, 65, 215, 559, 2795, 10253, 51265, 133289, 440879, 666445, 2204395, 5731427, 28657135]

約数ペア:

[(1, 28657135), (5, 5731427), (13, 2204395), (43, 666445), (65, 440879), (215, 133289), (559, 51265), (2795, 10253)]