20747818

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{3931}}^1$

素因数の和:3982

約数の個数: 32

約数和(自身を含む): 39634560

約数和(自身を除く): 18886742

約数列:

[1, 2, 7, 13, 14, 26, 29, 58, 91, 182, 203, 377, 406, 754, 2639, 3931, 5278, 7862, 27517, 51103, 55034, 102206, 113999, 227998, 357721, 715442, 797993, 1481987, 1595986, 2963974, 10373909, 20747818]

約数ペア:

[(1, 20747818), (2, 10373909), (7, 2963974), (13, 1595986), (14, 1481987), (26, 797993), (29, 715442), (58, 357721), (91, 227998), (182, 113999), (203, 102206), (377, 55034), (406, 51103), (754, 27517), (2639, 7862), (3931, 5278)]