648567

素因数分解:

$3^5\times {\mathrm{17}}^1\times {\mathrm{157}}^1$

素因数の和:189

約数の個数: 24

約数和(自身を含む): 1035216

約数和(自身を除く): 386649

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 157, 243, 459, 471, 1377, 1413, 2669, 4131, 4239, 8007, 12717, 24021, 38151, 72063, 216189, 648567]

約数ペア:

[(1, 648567), (3, 216189), (9, 72063), (17, 38151), (27, 24021), (51, 12717), (81, 8007), (153, 4239), (157, 4131), (243, 2669), (459, 1413), (471, 1377)]