18908840

素因数分解:

$2^3\times 5^1\times {\mathrm{472721}}^1$

素因数の和:472732

約数の個数: 16

約数和(自身を含む): 42544980

約数和(自身を除く): 23636140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 472721, 945442, 1890884, 2363605, 3781768, 4727210, 9454420, 18908840]

約数ペア:

[(1, 18908840), (2, 9454420), (4, 4727210), (5, 3781768), (8, 2363605), (10, 1890884), (20, 945442), (40, 472721)]