20916861

素因数分解:

$3^1\times 7^1\times {\mathrm{431}}^1\times {\mathrm{2311}}^1$

素因数の和:2752

約数の個数: 16

約数和(自身を含む): 31961088

約数和(自身を除く): 11044227

約数列:

[1, 3, 7, 21, 431, 1293, 2311, 3017, 6933, 9051, 16177, 48531, 996041, 2988123, 6972287, 20916861]

約数ペア:

[(1, 20916861), (3, 6972287), (7, 2988123), (21, 996041), (431, 48531), (1293, 16177), (2311, 9051), (3017, 6933)]