20704809

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{239}}^1\times {\mathrm{431}}^1$

素因数の和:740

約数の個数: 16

約数和(自身を含む): 28200960

約数和(自身を除く): 7496151

約数列:

[1, 3, 67, 201, 239, 431, 717, 1293, 16013, 28877, 48039, 86631, 103009, 309027, 6901603, 20704809]

約数ペア:

[(1, 20704809), (3, 6901603), (67, 309027), (201, 103009), (239, 86631), (431, 48039), (717, 28877), (1293, 16013)]