20999613

素因数分解:

$3^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1\times {\mathrm{431}}^1$

素因数の和:692

約数の個数: 16

約数和(自身を含む): 28512000

約数和(自身を除く): 7512387

約数列:

[1, 3, 109, 149, 327, 431, 447, 1293, 16241, 46979, 48723, 64219, 140937, 192657, 6999871, 20999613]

約数ペア:

[(1, 20999613), (3, 6999871), (109, 192657), (149, 140937), (327, 64219), (431, 48723), (447, 46979), (1293, 16241)]