407997

素因数分解:

$3^5\times {\mathrm{23}}^1\times {\mathrm{73}}^1$

素因数の和:111

約数の個数: 24

約数和(自身を含む): 646464

約数和(自身を除く): 238467

約数列:

[1, 3, 9, 23, 27, 69, 73, 81, 207, 219, 243, 621, 657, 1679, 1863, 1971, 5037, 5589, 5913, 15111, 17739, 45333, 135999, 407997]

約数ペア:

[(1, 407997), (3, 135999), (9, 45333), (23, 17739), (27, 15111), (69, 5913), (73, 5589), (81, 5037), (207, 1971), (219, 1863), (243, 1679), (621, 657)]