80451440

素因数分解:

$2^4\times 5^1\times {\mathrm{1005643}}^1$

素因数の和:1005656

約数の個数: 20

約数和(自身を含む): 187049784

約数和(自身を除く): 106598344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1005643, 2011286, 4022572, 5028215, 8045144, 10056430, 16090288, 20112860, 40225720, 80451440]

約数ペア:

[(1, 80451440), (2, 40225720), (4, 20112860), (5, 16090288), (8, 10056430), (10, 8045144), (16, 5028215), (20, 4022572), (40, 2011286), (80, 1005643)]