1540217

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{43}}^2$

素因数の和:117

約数の個数: 18

約数和(自身を含む): 1942218

約数和(自身を除く): 402001

約数列:

[1, 7, 17, 43, 49, 119, 301, 731, 833, 1849, 2107, 5117, 12943, 31433, 35819, 90601, 220031, 1540217]

約数ペア:

[(1, 1540217), (7, 220031), (17, 90601), (43, 35819), (49, 31433), (119, 12943), (301, 5117), (731, 2107), (833, 1849)]