278320077

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{709}}^1$

素因数の和:823

約数の個数: 64

約数和(自身を含む): 494387200

約数和(自身を除く): 216067123

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 67, 93, 189, 201, 217, 279, 469, 603, 651, 709, 837, 1407, 1809, 1953, 2077, 2127, 4221, 4963, 5859, 6231, 6381, 12663, 14539, 14889, 18693, 19143, 21979, 43617, 44667, 47503, 56079, 65937, 130851, 134001, 142509, 153853, 197811, 332521, 392553, 427527, 461559, 593433, 997563, 1282581, 1384677, 1472593, 2992689, 4154031, 4417779, 8978067, 10308151, 13253337, 30924453, 39760011, 92773359, 278320077]

約数ペア:

[(1, 278320077), (3, 92773359), (7, 39760011), (9, 30924453), (21, 13253337), (27, 10308151), (31, 8978067), (63, 4417779), (67, 4154031), (93, 2992689), (189, 1472593), (201, 1384677), (217, 1282581), (279, 997563), (469, 593433), (603, 461559), (651, 427527), (709, 392553), (837, 332521), (1407, 197811), (1809, 153853), (1953, 142509), (2077, 134001), (2127, 130851), (4221, 65937), (4963, 56079), (5859, 47503), (6231, 44667), (6381, 43617), (12663, 21979), (14539, 19143), (14889, 18693)]