18782869

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{857}}^1$

素因数の和:996

約数の個数: 16

約数和(自身を含む): 22404096

約数和(自身を除く): 3621227

約数列:

[1, 7, 31, 101, 217, 707, 857, 3131, 5999, 21917, 26567, 86557, 185969, 605899, 2683267, 18782869]

約数ペア:

[(1, 18782869), (7, 2683267), (31, 605899), (101, 185969), (217, 86557), (707, 26567), (857, 21917), (3131, 5999)]