28162780

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{21017}}^1$

素因数の和:21093

約数の個数: 24

約数和(自身を含む): 60027408

約数和(自身を除く): 31864628

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 21017, 42034, 84068, 105085, 210170, 420340, 1408139, 2816278, 5632556, 7040695, 14081390, 28162780]

約数ペア:

[(1, 28162780), (2, 14081390), (4, 7040695), (5, 5632556), (10, 2816278), (20, 1408139), (67, 420340), (134, 210170), (268, 105085), (335, 84068), (670, 42034), (1340, 21017)]