155220891

素因数分解:

$3^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{21179}}^1$

素因数の和:21538

約数の個数: 16

約数和(自身を含む): 237216000

約数和(自身を除く): 81995109

約数列:

[1, 3, 7, 21, 349, 1047, 2443, 7329, 21179, 63537, 148253, 444759, 7391471, 22174413, 51740297, 155220891]

約数ペア:

[(1, 155220891), (3, 51740297), (7, 22174413), (21, 7391471), (349, 444759), (1047, 148253), (2443, 63537), (7329, 21179)]