1277290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1$

素因数の和:342

約数の個数: 32

約数和(自身を含む): 2674944

約数和(自身を除く): 1397654

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 142, 257, 355, 497, 514, 710, 994, 1285, 1799, 2485, 2570, 3598, 4970, 8995, 17990, 18247, 36494, 91235, 127729, 182470, 255458, 638645, 1277290]

約数ペア:

[(1, 1277290), (2, 638645), (5, 255458), (7, 182470), (10, 127729), (14, 91235), (35, 36494), (70, 18247), (71, 17990), (142, 8995), (257, 4970), (355, 3598), (497, 2570), (514, 2485), (710, 1799), (994, 1285)]