1225840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1$

素因数の和:230

約数の個数: 80

約数和(自身を含む): 3571200

約数和(自身を除く): 2345360

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 199, 220, 280, 308, 385, 398, 440, 560, 616, 770, 796, 880, 995, 1232, 1393, 1540, 1592, 1990, 2189, 2786, 3080, 3184, 3980, 4378, 5572, 6160, 6965, 7960, 8756, 10945, 11144, 13930, 15323, 15920, 17512, 21890, 22288, 27860, 30646, 35024, 43780, 55720, 61292, 76615, 87560, 111440, 122584, 153230, 175120, 245168, 306460, 612920, 1225840]

約数ペア:

[(1, 1225840), (2, 612920), (4, 306460), (5, 245168), (7, 175120), (8, 153230), (10, 122584), (11, 111440), (14, 87560), (16, 76615), (20, 61292), (22, 55720), (28, 43780), (35, 35024), (40, 30646), (44, 27860), (55, 22288), (56, 21890), (70, 17512), (77, 15920), (80, 15323), (88, 13930), (110, 11144), (112, 10945), (140, 8756), (154, 7960), (176, 6965), (199, 6160), (220, 5572), (280, 4378), (308, 3980), (385, 3184), (398, 3080), (440, 2786), (560, 2189), (616, 1990), (770, 1592), (796, 1540), (880, 1393), (995, 1232)]