678396978

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{991}}^1\times {\mathrm{1811}}^1$

素因数の和:2820

約数の個数: 64

約数和(自身を含む): 1725603840

約数和(自身を除く): 1047206862

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 189, 378, 991, 1811, 1982, 2973, 3622, 5433, 5946, 6937, 8919, 10866, 12677, 13874, 16299, 17838, 20811, 25354, 26757, 32598, 38031, 41622, 48897, 53514, 62433, 76062, 97794, 114093, 124866, 187299, 228186, 342279, 374598, 684558, 1794701, 3589402, 5384103, 10768206, 12562907, 16152309, 25125814, 32304618, 37688721, 48456927, 75377442, 96913854, 113066163, 226132326, 339198489, 678396978]

約数ペア:

[(1, 678396978), (2, 339198489), (3, 226132326), (6, 113066163), (7, 96913854), (9, 75377442), (14, 48456927), (18, 37688721), (21, 32304618), (27, 25125814), (42, 16152309), (54, 12562907), (63, 10768206), (126, 5384103), (189, 3589402), (378, 1794701), (991, 684558), (1811, 374598), (1982, 342279), (2973, 228186), (3622, 187299), (5433, 124866), (5946, 114093), (6937, 97794), (8919, 76062), (10866, 62433), (12677, 53514), (13874, 48897), (16299, 41622), (17838, 38031), (20811, 32598), (25354, 26757)]