205509717

素因数分解:

$3^5\times 7^1\times {\mathrm{120817}}^1$

素因数の和:120839

約数の個数: 24

約数和(自身を含む): 351822016

約数和(自身を除く): 146312299

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 120817, 362451, 845719, 1087353, 2537157, 3262059, 7611471, 9786177, 22834413, 29358531, 68503239, 205509717]

約数ペア:

[(1, 205509717), (3, 68503239), (7, 29358531), (9, 22834413), (21, 9786177), (27, 7611471), (63, 3262059), (81, 2537157), (189, 1087353), (243, 845719), (567, 362451), (1701, 120817)]