21022420

素因数分解:

$2^2\times 5^1\times {\mathrm{563}}^1\times {\mathrm{1867}}^1$

素因数の和:2439

約数の個数: 24

約数和(自身を含む): 44249184

約数和(自身を除く): 23226764

約数列:

[1, 2, 4, 5, 10, 20, 563, 1126, 1867, 2252, 2815, 3734, 5630, 7468, 9335, 11260, 18670, 37340, 1051121, 2102242, 4204484, 5255605, 10511210, 21022420]

約数ペア:

[(1, 21022420), (2, 10511210), (4, 5255605), (5, 4204484), (10, 2102242), (20, 1051121), (563, 37340), (1126, 18670), (1867, 11260), (2252, 9335), (2815, 7468), (3734, 5630)]