20513073

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{13381}}^1$

素因数の和:13464

約数の個数: 16

約数和(自身を含む): 31688576

約数和(自身を除く): 11175503

約数列:

[1, 3, 7, 21, 73, 219, 511, 1533, 13381, 40143, 93667, 281001, 976813, 2930439, 6837691, 20513073]

約数ペア:

[(1, 20513073), (3, 6837691), (7, 2930439), (21, 976813), (73, 281001), (219, 93667), (511, 40143), (1533, 13381)]