80878581

素因数分解:

$3^4\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2129}}^1$

素因数の和:2215

約数の個数: 40

約数和(自身を含む): 140205120

約数和(自身を除く): 59326539

約数列:

[1, 3, 7, 9, 21, 27, 63, 67, 81, 189, 201, 469, 567, 603, 1407, 1809, 2129, 4221, 5427, 6387, 12663, 14903, 19161, 37989, 44709, 57483, 134127, 142643, 172449, 402381, 427929, 998501, 1207143, 1283787, 2995503, 3851361, 8986509, 11554083, 26959527, 80878581]

約数ペア:

[(1, 80878581), (3, 26959527), (7, 11554083), (9, 8986509), (21, 3851361), (27, 2995503), (63, 1283787), (67, 1207143), (81, 998501), (189, 427929), (201, 402381), (469, 172449), (567, 142643), (603, 134127), (1407, 57483), (1809, 44709), (2129, 37989), (4221, 19161), (5427, 14903), (6387, 12663)]