18509823

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{149}}^1$

素因数の和:308

約数の個数: 32

約数和(自身を含む): 28512000

約数和(自身を除く): 10002177

約数列:

[1, 3, 9, 27, 43, 107, 129, 149, 321, 387, 447, 963, 1161, 1341, 2889, 4023, 4601, 6407, 13803, 15943, 19221, 41409, 47829, 57663, 124227, 143487, 172989, 430461, 685549, 2056647, 6169941, 18509823]

約数ペア:

[(1, 18509823), (3, 6169941), (9, 2056647), (27, 685549), (43, 430461), (107, 172989), (129, 143487), (149, 124227), (321, 57663), (387, 47829), (447, 41409), (963, 19221), (1161, 15943), (1341, 13803), (2889, 6407), (4023, 4601)]