78489999

素因数分解:

$3^3\times 7^1\times {\mathrm{601}}^1\times {\mathrm{691}}^1$

素因数の和:1308

約数の個数: 32

約数和(自身を含む): 133306880

約数和(自身を除く): 54816881

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 601, 691, 1803, 2073, 4207, 4837, 5409, 6219, 12621, 14511, 16227, 18657, 37863, 43533, 113589, 130599, 415291, 1245873, 2907037, 3737619, 8721111, 11212857, 26163333, 78489999]

約数ペア:

[(1, 78489999), (3, 26163333), (7, 11212857), (9, 8721111), (21, 3737619), (27, 2907037), (63, 1245873), (189, 415291), (601, 130599), (691, 113589), (1803, 43533), (2073, 37863), (4207, 18657), (4837, 16227), (5409, 14511), (6219, 12621)]