19853991

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{10657}}^1$

素因数の和:10692

約数の個数: 20

約数和(自身を含む): 30950832

約数和(自身を除く): 11096841

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 10657, 31971, 95913, 245111, 287739, 735333, 863217, 2205999, 6617997, 19853991]

約数ペア:

[(1, 19853991), (3, 6617997), (9, 2205999), (23, 863217), (27, 735333), (69, 287739), (81, 245111), (207, 95913), (621, 31971), (1863, 10657)]