80811080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1123}}^1$

素因数の和:1398

約数の個数: 64

約数和(自身を含む): 208794240

約数和(自身を除く): 127983160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 257, 280, 514, 1028, 1123, 1285, 1799, 2056, 2246, 2570, 3598, 4492, 5140, 5615, 7196, 7861, 8984, 8995, 10280, 11230, 14392, 15722, 17990, 22460, 31444, 35980, 39305, 44920, 62888, 71960, 78610, 157220, 288611, 314440, 577222, 1154444, 1443055, 2020277, 2308888, 2886110, 4040554, 5772220, 8081108, 10101385, 11544440, 16162216, 20202770, 40405540, 80811080]

約数ペア:

[(1, 80811080), (2, 40405540), (4, 20202770), (5, 16162216), (7, 11544440), (8, 10101385), (10, 8081108), (14, 5772220), (20, 4040554), (28, 2886110), (35, 2308888), (40, 2020277), (56, 1443055), (70, 1154444), (140, 577222), (257, 314440), (280, 288611), (514, 157220), (1028, 78610), (1123, 71960), (1285, 62888), (1799, 44920), (2056, 39305), (2246, 35980), (2570, 31444), (3598, 22460), (4492, 17990), (5140, 15722), (5615, 14392), (7196, 11230), (7861, 10280), (8984, 8995)]