19087720

素因数分解:

$2^3\times 5^1\times {\mathrm{439}}^1\times {\mathrm{1087}}^1$

素因数の和:1537

約数の個数: 32

約数和(自身を含む): 43084800

約数和(自身を除く): 23997080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 439, 878, 1087, 1756, 2174, 2195, 3512, 4348, 4390, 5435, 8696, 8780, 10870, 17560, 21740, 43480, 477193, 954386, 1908772, 2385965, 3817544, 4771930, 9543860, 19087720]

約数ペア:

[(1, 19087720), (2, 9543860), (4, 4771930), (5, 3817544), (8, 2385965), (10, 1908772), (20, 954386), (40, 477193), (439, 43480), (878, 21740), (1087, 17560), (1756, 10870), (2174, 8780), (2195, 8696), (3512, 5435), (4348, 4390)]