20172761

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{397}}^1$

素因数の和:489

約数の個数: 24

約数和(自身を含む): 25317576

約数和(自身を除く): 5144815

約数列:

[1, 7, 17, 49, 61, 119, 397, 427, 833, 1037, 2779, 2989, 6749, 7259, 19453, 24217, 47243, 50813, 169519, 330701, 411689, 1186633, 2881823, 20172761]

約数ペア:

[(1, 20172761), (7, 2881823), (17, 1186633), (49, 411689), (61, 330701), (119, 169519), (397, 50813), (427, 47243), (833, 24217), (1037, 19453), (2779, 7259), (2989, 6749)]