20104945

素因数分解:

$5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{617}}^1$

素因数の和:662

約数の個数: 32

約数和(自身を含む): 29664000

約数和(自身を除く): 9559055

約数列:

[1, 5, 7, 19, 35, 49, 95, 133, 245, 343, 617, 665, 931, 1715, 3085, 4319, 4655, 6517, 11723, 21595, 30233, 32585, 58615, 82061, 151165, 211631, 410305, 574427, 1058155, 2872135, 4020989, 20104945]

約数ペア:

[(1, 20104945), (5, 4020989), (7, 2872135), (19, 1058155), (35, 574427), (49, 410305), (95, 211631), (133, 151165), (245, 82061), (343, 58615), (617, 32585), (665, 30233), (931, 21595), (1715, 11723), (3085, 6517), (4319, 4655)]