20816943

素因数分解:

$3^1\times 7^1\times {\mathrm{463}}^1\times {\mathrm{2141}}^1$

素因数の和:2614

約数の個数: 16

約数和(自身を含む): 31804416

約数和(自身を除く): 10987473

約数列:

[1, 3, 7, 21, 463, 1389, 2141, 3241, 6423, 9723, 14987, 44961, 991283, 2973849, 6938981, 20816943]

約数ペア:

[(1, 20816943), (3, 6938981), (7, 2973849), (21, 991283), (463, 44961), (1389, 14987), (2141, 9723), (3241, 6423)]