12720381309

素因数分解:

$3^2\times {\mathrm{157}}^1\times {\mathrm{9002393}}^1$

素因数の和:9002556

約数の個数: 12

約数和(自身を含む): 18490917276

約数和(自身を除く): 5770535967

約数列:

[1, 3, 9, 157, 471, 1413, 9002393, 27007179, 81021537, 1413375701, 4240127103, 12720381309]

約数ペア:

[(1, 12720381309), (3, 4240127103), (9, 1413375701), (157, 81021537), (471, 27007179), (1413, 9002393)]