15987800

素因数分解:

$2^3\times 5^2\times {\mathrm{79939}}^1$

素因数の和:79955

約数の個数: 24

約数和(自身を含む): 37172100

約数和(自身を除く): 21184300

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 79939, 159878, 319756, 399695, 639512, 799390, 1598780, 1998475, 3197560, 3996950, 7993900, 15987800]

約数ペア:

[(1, 15987800), (2, 7993900), (4, 3996950), (5, 3197560), (8, 1998475), (10, 1598780), (20, 799390), (25, 639512), (40, 399695), (50, 319756), (100, 159878), (200, 79939)]