640617666

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{11519}}^1$

素因数の和:11591

約数の個数: 64

約数和(自身を含む): 1486356480

約数和(自身を除く): 845738814

約数列:

[1, 2, 3, 6, 13, 23, 26, 31, 39, 46, 62, 69, 78, 93, 138, 186, 299, 403, 598, 713, 806, 897, 1209, 1426, 1794, 2139, 2418, 4278, 9269, 11519, 18538, 23038, 27807, 34557, 55614, 69114, 149747, 264937, 299494, 357089, 449241, 529874, 714178, 794811, 898482, 1071267, 1589622, 2142534, 3444181, 4642157, 6888362, 8213047, 9284314, 10332543, 13926471, 16426094, 20665086, 24639141, 27852942, 49278282, 106769611, 213539222, 320308833, 640617666]

約数ペア:

[(1, 640617666), (2, 320308833), (3, 213539222), (6, 106769611), (13, 49278282), (23, 27852942), (26, 24639141), (31, 20665086), (39, 16426094), (46, 13926471), (62, 10332543), (69, 9284314), (78, 8213047), (93, 6888362), (138, 4642157), (186, 3444181), (299, 2142534), (403, 1589622), (598, 1071267), (713, 898482), (806, 794811), (897, 714178), (1209, 529874), (1426, 449241), (1794, 357089), (2139, 299494), (2418, 264937), (4278, 149747), (9269, 69114), (11519, 55614), (18538, 34557), (23038, 27807)]