21078317

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{751}}^1$

素因数の和:908

約数の個数: 16

約数和(自身を含む): 24256512

約数和(自身を除く): 3178195

約数列:

[1, 13, 17, 127, 221, 751, 1651, 2159, 9763, 12767, 28067, 95377, 165971, 1239901, 1621409, 21078317]

約数ペア:

[(1, 21078317), (13, 1621409), (17, 1239901), (127, 165971), (221, 95377), (751, 28067), (1651, 12767), (2159, 9763)]