20120135

素因数分解:

$5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{2003}}^1$

素因数の和:2063

約数の個数: 24

約数和(自身を含む): 28785456

約数和(自身を除く): 8665321

約数列:

[1, 5, 7, 35, 41, 49, 205, 245, 287, 1435, 2003, 2009, 10015, 10045, 14021, 70105, 82123, 98147, 410615, 490735, 574861, 2874305, 4024027, 20120135]

約数ペア:

[(1, 20120135), (5, 4024027), (7, 2874305), (35, 574861), (41, 490735), (49, 410615), (205, 98147), (245, 82123), (287, 70105), (1435, 14021), (2003, 10045), (2009, 10015)]