19809755

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^2\times {\mathrm{673}}^1$

素因数の和:743

約数の個数: 24

約数和(自身を含む): 28178592

約数和(自身を除く): 8368837

約数列:

[1, 5, 7, 29, 35, 145, 203, 673, 841, 1015, 3365, 4205, 4711, 5887, 19517, 23555, 29435, 97585, 136619, 565993, 683095, 2829965, 3961951, 19809755]

約数ペア:

[(1, 19809755), (5, 3961951), (7, 2829965), (29, 683095), (35, 565993), (145, 136619), (203, 97585), (673, 29435), (841, 23555), (1015, 19517), (3365, 5887), (4205, 4711)]