12640293

素因数分解:

$3^4\times {\mathrm{113}}^1\times {\mathrm{1381}}^1$

素因数の和:1506

約数の個数: 20

約数和(自身を含む): 19063308

約数和(自身を除く): 6423015

約数列:

[1, 3, 9, 27, 81, 113, 339, 1017, 1381, 3051, 4143, 9153, 12429, 37287, 111861, 156053, 468159, 1404477, 4213431, 12640293]

約数ペア:

[(1, 12640293), (3, 4213431), (9, 1404477), (27, 468159), (81, 156053), (113, 111861), (339, 37287), (1017, 12429), (1381, 9153), (3051, 4143)]