21461553

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{521}}^1$

素因数の和:749

約数の個数: 24

約数和(自身を含む): 32572800

約数和(自身を除く): 11111247

約数列:

[1, 3, 9, 23, 69, 199, 207, 521, 597, 1563, 1791, 4577, 4689, 11983, 13731, 35949, 41193, 103679, 107847, 311037, 933111, 2384617, 7153851, 21461553]

約数ペア:

[(1, 21461553), (3, 7153851), (9, 2384617), (23, 933111), (69, 311037), (199, 107847), (207, 103679), (521, 41193), (597, 35949), (1563, 13731), (1791, 11983), (4577, 4689)]