21022221

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{4583}}^1$

素因数の和:4736

約数の個数: 16

約数和(自身を含む): 30804480

約数和(自身を除く): 9782259

約数列:

[1, 3, 11, 33, 139, 417, 1529, 4583, 4587, 13749, 50413, 151239, 637037, 1911111, 7007407, 21022221]

約数ペア:

[(1, 21022221), (3, 7007407), (11, 1911111), (33, 637037), (139, 151239), (417, 50413), (1529, 13749), (4583, 4587)]