20199249

素因数分解:

$3^2\times 7^1\times {\mathrm{491}}^1\times {\mathrm{653}}^1$

素因数の和:1157

約数の個数: 24

約数和(自身を含む): 33463872

約数和(自身を除く): 13264623

約数列:

[1, 3, 7, 9, 21, 63, 491, 653, 1473, 1959, 3437, 4419, 4571, 5877, 10311, 13713, 30933, 41139, 320623, 961869, 2244361, 2885607, 6733083, 20199249]

約数ペア:

[(1, 20199249), (3, 6733083), (7, 2885607), (9, 2244361), (21, 961869), (63, 320623), (491, 41139), (653, 30933), (1473, 13713), (1959, 10311), (3437, 5877), (4419, 4571)]