28876779

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:192

約数の個数: 48

約数和(自身を含む): 46126080

約数和(自身を除く): 17249301

約数列:

[1, 3, 9, 29, 31, 43, 83, 87, 93, 129, 249, 261, 279, 387, 747, 899, 1247, 1333, 2407, 2573, 2697, 3569, 3741, 3999, 7221, 7719, 8091, 10707, 11223, 11997, 21663, 23157, 32121, 38657, 74617, 103501, 110639, 115971, 223851, 310503, 331917, 347913, 671553, 931509, 995751, 3208531, 9625593, 28876779]

約数ペア:

[(1, 28876779), (3, 9625593), (9, 3208531), (29, 995751), (31, 931509), (43, 671553), (83, 347913), (87, 331917), (93, 310503), (129, 223851), (249, 115971), (261, 110639), (279, 103501), (387, 74617), (747, 38657), (899, 32121), (1247, 23157), (1333, 21663), (2407, 11997), (2573, 11223), (2697, 10707), (3569, 8091), (3741, 7719), (3999, 7221)]