1278284

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{643}}^1$

素因数の和:725

約数の個数: 24

約数和(自身を含む): 2596608

約数和(自身を除く): 1318324

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 284, 497, 643, 994, 1286, 1988, 2572, 4501, 9002, 18004, 45653, 91306, 182612, 319571, 639142, 1278284]

約数ペア:

[(1, 1278284), (2, 639142), (4, 319571), (7, 182612), (14, 91306), (28, 45653), (71, 18004), (142, 9002), (284, 4501), (497, 2572), (643, 1988), (994, 1286)]