19161680

素因数分解:

$2^4\times 5^1\times {\mathrm{239521}}^1$

素因数の和:239534

約数の個数: 20

約数和(自身を含む): 44551092

約数和(自身を除く): 25389412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 239521, 479042, 958084, 1197605, 1916168, 2395210, 3832336, 4790420, 9580840, 19161680]

約数ペア:

[(1, 19161680), (2, 9580840), (4, 4790420), (5, 3832336), (8, 2395210), (10, 1916168), (16, 1197605), (20, 958084), (40, 479042), (80, 239521)]