21262065

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128861}}^1$

素因数の和:128880

約数の個数: 16

約数和(自身を含む): 37112256

約数和(自身を除く): 15850191

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 128861, 386583, 644305, 1417471, 1932915, 4252413, 7087355, 21262065]

約数ペア:

[(1, 21262065), (3, 7087355), (5, 4252413), (11, 1932915), (15, 1417471), (33, 644305), (55, 386583), (165, 128861)]