28055391

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{277}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 47918304

約数和(自身を除く): 19862913

約数列:

[1, 3, 7, 13, 21, 39, 49, 53, 91, 147, 159, 273, 277, 371, 637, 689, 831, 1113, 1911, 1939, 2067, 2597, 3601, 4823, 5817, 7791, 10803, 13573, 14469, 14681, 25207, 33761, 40719, 44043, 75621, 101283, 102767, 176449, 190853, 308301, 529347, 572559, 719369, 1335971, 2158107, 4007913, 9351797, 28055391]

約数ペア:

[(1, 28055391), (3, 9351797), (7, 4007913), (13, 2158107), (21, 1335971), (39, 719369), (49, 572559), (53, 529347), (91, 308301), (147, 190853), (159, 176449), (273, 102767), (277, 101283), (371, 75621), (637, 44043), (689, 40719), (831, 33761), (1113, 25207), (1911, 14681), (1939, 14469), (2067, 13573), (2597, 10803), (3601, 7791), (4823, 5817)]