20289951

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{659}}^1$

素因数の和:987

約数の個数: 24

約数和(自身を含む): 32123520

約数和(自身を除く): 11833569

約数列:

[1, 3, 9, 11, 33, 99, 311, 659, 933, 1977, 2799, 3421, 5931, 7249, 10263, 21747, 30789, 65241, 204949, 614847, 1844541, 2254439, 6763317, 20289951]

約数ペア:

[(1, 20289951), (3, 6763317), (9, 2254439), (11, 1844541), (33, 614847), (99, 204949), (311, 65241), (659, 30789), (933, 21747), (1977, 10263), (2799, 7249), (3421, 5931)]