1305560

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{257}}^1$

素因数の和:395

約数の個数: 32

約数和(自身を含む): 2972160

約数和(自身を除く): 1666600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 257, 508, 514, 635, 1016, 1028, 1270, 1285, 2056, 2540, 2570, 5080, 5140, 10280, 32639, 65278, 130556, 163195, 261112, 326390, 652780, 1305560]

約数ペア:

[(1, 1305560), (2, 652780), (4, 326390), (5, 261112), (8, 163195), (10, 130556), (20, 65278), (40, 32639), (127, 10280), (254, 5140), (257, 5080), (508, 2570), (514, 2540), (635, 2056), (1016, 1285), (1028, 1270)]