51396687

素因数分解:

$3^7\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:423

約数の個数: 32

約数和(自身を含む): 78405120

約数和(自身を除く): 27008433

約数列:

[1, 3, 9, 27, 71, 81, 213, 243, 331, 639, 729, 993, 1917, 2187, 2979, 5751, 8937, 17253, 23501, 26811, 51759, 70503, 80433, 155277, 211509, 241299, 634527, 723897, 1903581, 5710743, 17132229, 51396687]

約数ペア:

[(1, 51396687), (3, 17132229), (9, 5710743), (27, 1903581), (71, 723897), (81, 634527), (213, 241299), (243, 211509), (331, 155277), (639, 80433), (729, 70503), (993, 51759), (1917, 26811), (2187, 23501), (2979, 17253), (5751, 8937)]