81691257

素因数分解:

$3^1\times {\mathrm{103}}^1\times {\mathrm{463}}^1\times {\mathrm{571}}^1$

素因数の和:1140

約数の個数: 16

約数和(自身を含む): 110409728

約数和(自身を除く): 28718471

約数列:

[1, 3, 103, 309, 463, 571, 1389, 1713, 47689, 58813, 143067, 176439, 264373, 793119, 27230419, 81691257]

約数ペア:

[(1, 81691257), (3, 27230419), (103, 793119), (309, 264373), (463, 176439), (571, 143067), (1389, 58813), (1713, 47689)]