28515123

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{941}}^1$

素因数の和:1004

約数の個数: 48

約数和(自身を含む): 52118976

約数和(自身を除く): 23603853

約数列:

[1, 3, 7, 9, 13, 21, 37, 39, 63, 91, 111, 117, 259, 273, 333, 481, 777, 819, 941, 1443, 2331, 2823, 3367, 4329, 6587, 8469, 10101, 12233, 19761, 30303, 34817, 36699, 59283, 85631, 104451, 110097, 243719, 256893, 313353, 452621, 731157, 770679, 1357863, 2193471, 3168347, 4073589, 9505041, 28515123]

約数ペア:

[(1, 28515123), (3, 9505041), (7, 4073589), (9, 3168347), (13, 2193471), (21, 1357863), (37, 770679), (39, 731157), (63, 452621), (91, 313353), (111, 256893), (117, 243719), (259, 110097), (273, 104451), (333, 85631), (481, 59283), (777, 36699), (819, 34817), (941, 30303), (1443, 19761), (2331, 12233), (2823, 10101), (3367, 8469), (4329, 6587)]