1385991

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{241}}^1$

素因数の和:324

約数の個数: 20

約数和(自身を含む): 2108304

約数和(自身を除く): 722313

約数列:

[1, 3, 9, 27, 71, 81, 213, 241, 639, 723, 1917, 2169, 5751, 6507, 17111, 19521, 51333, 153999, 461997, 1385991]

約数ペア:

[(1, 1385991), (3, 461997), (9, 153999), (27, 51333), (71, 19521), (81, 17111), (213, 6507), (241, 5751), (639, 2169), (723, 1917)]