19728820

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{14723}}^1$

素因数の和:14799

約数の個数: 24

約数和(自身を含む): 42051744

約数和(自身を除く): 22322924

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 14723, 29446, 58892, 73615, 147230, 294460, 986441, 1972882, 3945764, 4932205, 9864410, 19728820]

約数ペア:

[(1, 19728820), (2, 9864410), (4, 4932205), (5, 3945764), (10, 1972882), (20, 986441), (67, 294460), (134, 147230), (268, 73615), (335, 58892), (670, 29446), (1340, 14723)]