12971997064

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{19739}}^1$

素因数の和:19918

約数の個数: 64

約数和(自身を含む): 26862192000

約数和(自身を除く): 13890194936

約数列:

[1, 2, 4, 8, 13, 26, 52, 71, 89, 104, 142, 178, 284, 356, 568, 712, 923, 1157, 1846, 2314, 3692, 4628, 6319, 7384, 9256, 12638, 19739, 25276, 39478, 50552, 78956, 82147, 157912, 164294, 256607, 328588, 513214, 657176, 1026428, 1401469, 1756771, 2052856, 2802938, 3513542, 5605876, 7027084, 11211752, 14054168, 18219097, 22838023, 36438194, 45676046, 72876388, 91352092, 124730741, 145752776, 182704184, 249461482, 498922964, 997845928, 1621499633, 3242999266, 6485998532, 12971997064]

約数ペア:

[(1, 12971997064), (2, 6485998532), (4, 3242999266), (8, 1621499633), (13, 997845928), (26, 498922964), (52, 249461482), (71, 182704184), (89, 145752776), (104, 124730741), (142, 91352092), (178, 72876388), (284, 45676046), (356, 36438194), (568, 22838023), (712, 18219097), (923, 14054168), (1157, 11211752), (1846, 7027084), (2314, 5605876), (3692, 3513542), (4628, 2802938), (6319, 2052856), (7384, 1756771), (9256, 1401469), (12638, 1026428), (19739, 657176), (25276, 513214), (39478, 328588), (50552, 256607), (78956, 164294), (82147, 157912)]