648243

素因数分解:

$3^4\times {\mathrm{53}}^1\times {\mathrm{151}}^1$

素因数の和:216

約数の個数: 20

約数和(自身を含む): 993168

約数和(自身を除く): 344925

約数列:

[1, 3, 9, 27, 53, 81, 151, 159, 453, 477, 1359, 1431, 4077, 4293, 8003, 12231, 24009, 72027, 216081, 648243]

約数ペア:

[(1, 648243), (3, 216081), (9, 72027), (27, 24009), (53, 12231), (81, 8003), (151, 4293), (159, 4077), (453, 1431), (477, 1359)]