21006837

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{40949}}^1$

素因数の和:40977

約数の個数: 16

約数和(自身を含む): 32760000

約数和(自身を除く): 11753163

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 40949, 122847, 368541, 778031, 1105623, 2334093, 7002279, 21006837]

約数ペア:

[(1, 21006837), (3, 7002279), (9, 2334093), (19, 1105623), (27, 778031), (57, 368541), (171, 122847), (513, 40949)]