20473317

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{251}}^1$

素因数の和:335

約数の個数: 40

約数和(自身を含む): 32931360

約数和(自身を除く): 12458043

約数列:

[1, 3, 9, 19, 27, 53, 57, 81, 159, 171, 251, 477, 513, 753, 1007, 1431, 1539, 2259, 3021, 4293, 4769, 6777, 9063, 13303, 14307, 20331, 27189, 39909, 42921, 81567, 119727, 128763, 252757, 359181, 386289, 758271, 1077543, 2274813, 6824439, 20473317]

約数ペア:

[(1, 20473317), (3, 6824439), (9, 2274813), (19, 1077543), (27, 758271), (53, 386289), (57, 359181), (81, 252757), (159, 128763), (171, 119727), (251, 81567), (477, 42921), (513, 39909), (753, 27189), (1007, 20331), (1431, 14307), (1539, 13303), (2259, 9063), (3021, 6777), (4293, 4769)]