20984817

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1367}}^1$

素因数の和:1437

約数の個数: 32

約数和(自身を含む): 34670592

約数和(自身を除く): 13685775

約数列:

[1, 3, 7, 17, 21, 43, 51, 119, 129, 301, 357, 731, 903, 1367, 2193, 4101, 5117, 9569, 15351, 23239, 28707, 58781, 69717, 162673, 176343, 411467, 488019, 999277, 1234401, 2997831, 6994939, 20984817]

約数ペア:

[(1, 20984817), (3, 6994939), (7, 2997831), (17, 1234401), (21, 999277), (43, 488019), (51, 411467), (119, 176343), (129, 162673), (301, 69717), (357, 58781), (731, 28707), (903, 23239), (1367, 15351), (2193, 9569), (4101, 5117)]