278313431

素因数分解:

${\mathrm{11}}^3\times {\mathrm{211}}^1\times {\mathrm{991}}^1$

素因数の和:1235

約数の個数: 16

約数和(自身を含む): 307885056

約数和(自身を除く): 29571625

約数列:

[1, 11, 121, 211, 991, 1331, 2321, 10901, 25531, 119911, 209101, 280841, 1319021, 2300111, 25301221, 278313431]

約数ペア:

[(1, 278313431), (11, 25301221), (121, 2300111), (211, 1319021), (991, 280841), (1331, 209101), (2321, 119911), (10901, 25531)]