1308545

素因数分解:

$5^1\times 7^4\times {\mathrm{109}}^1$

素因数の和:142

約数の個数: 20

約数和(自身を含む): 1848660

約数和(自身を除く): 540115

約数列:

[1, 5, 7, 35, 49, 109, 245, 343, 545, 763, 1715, 2401, 3815, 5341, 12005, 26705, 37387, 186935, 261709, 1308545]

約数ペア:

[(1, 1308545), (5, 261709), (7, 186935), (35, 37387), (49, 26705), (109, 12005), (245, 5341), (343, 3815), (545, 2401), (763, 1715)]