81212439

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{1471}}^1$

素因数の和:1731

約数の個数: 32

約数和(自身を含む): 135659520

約数和(自身を除く): 54447081

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 239, 717, 1471, 1673, 2629, 4413, 5019, 7887, 10297, 16181, 18403, 30891, 48543, 55209, 113267, 339801, 351569, 1054707, 2460983, 3867259, 7382949, 11601777, 27070813, 81212439]

約数ペア:

[(1, 81212439), (3, 27070813), (7, 11601777), (11, 7382949), (21, 3867259), (33, 2460983), (77, 1054707), (231, 351569), (239, 339801), (717, 113267), (1471, 55209), (1673, 48543), (2629, 30891), (4413, 18403), (5019, 16181), (7887, 10297)]