20451447

素因数分解:

$3^4\times {\mathrm{163}}^1\times {\mathrm{1549}}^1$

素因数の和:1724

約数の個数: 20

約数和(自身を含む): 30758200

約数和(自身を除く): 10306753

約数列:

[1, 3, 9, 27, 81, 163, 489, 1467, 1549, 4401, 4647, 13203, 13941, 41823, 125469, 252487, 757461, 2272383, 6817149, 20451447]

約数ペア:

[(1, 20451447), (3, 6817149), (9, 2272383), (27, 757461), (81, 252487), (163, 125469), (489, 41823), (1467, 13941), (1549, 13203), (4401, 4647)]