20986021

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{617}}^1$

素因数の和:780

約数の個数: 16

約数和(自身を含む): 24799104

約数和(自身を除く): 3813083

約数列:

[1, 7, 43, 113, 301, 617, 791, 4319, 4859, 26531, 34013, 69721, 185717, 488047, 2998003, 20986021]

約数ペア:

[(1, 20986021), (7, 2998003), (43, 488047), (113, 185717), (301, 69721), (617, 34013), (791, 26531), (4319, 4859)]