20138889

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1\times {\mathrm{613}}^1$

素因数の和:896

約数の個数: 16

約数和(自身を含む): 27585792

約数和(自身を除く): 7446903

約数列:

[1, 3, 47, 141, 233, 613, 699, 1839, 10951, 28811, 32853, 86433, 142829, 428487, 6712963, 20138889]

約数ペア:

[(1, 20138889), (3, 6712963), (47, 428487), (141, 142829), (233, 86433), (613, 32853), (699, 28811), (1839, 10951)]