81554931

素因数分解:

$3^5\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 128943360

約数和(自身を除く): 47388429

約数列:

[1, 3, 9, 27, 29, 71, 81, 87, 163, 213, 243, 261, 489, 639, 783, 1467, 1917, 2059, 2349, 4401, 4727, 5751, 6177, 7047, 11573, 13203, 14181, 17253, 18531, 34719, 39609, 42543, 55593, 104157, 127629, 166779, 312471, 335617, 382887, 500337, 937413, 1006851, 1148661, 2812239, 3020553, 9061659, 27184977, 81554931]

約数ペア:

[(1, 81554931), (3, 27184977), (9, 9061659), (27, 3020553), (29, 2812239), (71, 1148661), (81, 1006851), (87, 937413), (163, 500337), (213, 382887), (243, 335617), (261, 312471), (489, 166779), (639, 127629), (783, 104157), (1467, 55593), (1917, 42543), (2059, 39609), (2349, 34719), (4401, 18531), (4727, 17253), (5751, 14181), (6177, 13203), (7047, 11573)]