21290071

素因数分解:

${\mathrm{11}}^2\times {\mathrm{251}}^1\times {\mathrm{701}}^1$

素因数の和:974

約数の個数: 12

約数和(自身を含む): 23528232

約数和(自身を除く): 2238161

約数列:

[1, 11, 121, 251, 701, 2761, 7711, 30371, 84821, 175951, 1935461, 21290071]

約数ペア:

[(1, 21290071), (11, 1935461), (121, 175951), (251, 84821), (701, 30371), (2761, 7711)]