20057680

素因数分解:

$2^4\times 5^1\times {\mathrm{250721}}^1$

素因数の和:250734

約数の個数: 20

約数和(自身を含む): 46634292

約数和(自身を除く): 26576612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 250721, 501442, 1002884, 1253605, 2005768, 2507210, 4011536, 5014420, 10028840, 20057680]

約数ペア:

[(1, 20057680), (2, 10028840), (4, 5014420), (5, 4011536), (8, 2507210), (10, 2005768), (16, 1253605), (20, 1002884), (40, 501442), (80, 250721)]