208056009

素因数分解:

$3^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{10331}}^1$

素因数の和:10485

約数の個数: 24

約数和(自身を含む): 325086048

約数和(自身を除く): 117030039

約数列:

[1, 3, 7, 21, 49, 137, 147, 411, 959, 2877, 6713, 10331, 20139, 30993, 72317, 216951, 506219, 1415347, 1518657, 4246041, 9907429, 29722287, 69352003, 208056009]

約数ペア:

[(1, 208056009), (3, 69352003), (7, 29722287), (21, 9907429), (49, 4246041), (137, 1518657), (147, 1415347), (411, 506219), (959, 216951), (2877, 72317), (6713, 30993), (10331, 20139)]