20627089

素因数分解:

$7^2\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1$

素因数の和:245

約数の個数: 24

約数和(自身を含む): 24992448

約数和(自身を除く): 4365359

約数列:

[1, 7, 49, 61, 67, 103, 427, 469, 721, 2989, 3283, 4087, 5047, 6283, 6901, 28609, 43981, 48307, 200263, 307867, 338149, 420961, 2946727, 20627089]

約数ペア:

[(1, 20627089), (7, 2946727), (49, 420961), (61, 338149), (67, 307867), (103, 200263), (427, 48307), (469, 43981), (721, 28609), (2989, 6901), (3283, 6283), (4087, 5047)]