1991231480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{66463}}^1$

素因数の和:66588

約数の個数: 64

約数和(自身を含む): 5168240640

約数和(自身を除く): 3177009160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 107, 140, 214, 280, 428, 535, 749, 856, 1070, 1498, 2140, 2996, 3745, 4280, 5992, 7490, 14980, 29960, 66463, 132926, 265852, 332315, 465241, 531704, 664630, 930482, 1329260, 1860964, 2326205, 2658520, 3721928, 4652410, 7111541, 9304820, 14223082, 18609640, 28446164, 35557705, 49780787, 56892328, 71115410, 99561574, 142230820, 199123148, 248903935, 284461640, 398246296, 497807870, 995615740, 1991231480]

約数ペア:

[(1, 1991231480), (2, 995615740), (4, 497807870), (5, 398246296), (7, 284461640), (8, 248903935), (10, 199123148), (14, 142230820), (20, 99561574), (28, 71115410), (35, 56892328), (40, 49780787), (56, 35557705), (70, 28446164), (107, 18609640), (140, 14223082), (214, 9304820), (280, 7111541), (428, 4652410), (535, 3721928), (749, 2658520), (856, 2326205), (1070, 1860964), (1498, 1329260), (2140, 930482), (2996, 664630), (3745, 531704), (4280, 465241), (5992, 332315), (7490, 265852), (14980, 132926), (29960, 66463)]