20719713

素因数分解:

$3^1\times 7^1\times {\mathrm{463}}^1\times {\mathrm{2131}}^1$

素因数の和:2604

約数の個数: 16

約数和(自身を含む): 31655936

約数和(自身を除く): 10936223

約数列:

[1, 3, 7, 21, 463, 1389, 2131, 3241, 6393, 9723, 14917, 44751, 986653, 2959959, 6906571, 20719713]

約数ペア:

[(1, 20719713), (3, 6906571), (7, 2959959), (21, 986653), (463, 44751), (1389, 14917), (2131, 9723), (3241, 6393)]