18999985

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1\times {\mathrm{347}}^1$

素因数の和:632

約数の個数: 16

約数和(自身を含む): 23452416

約数和(自身を除く): 4452431

約数列:

[1, 5, 47, 233, 235, 347, 1165, 1735, 10951, 16309, 54755, 80851, 81545, 404255, 3799997, 18999985]

約数ペア:

[(1, 18999985), (5, 3799997), (47, 404255), (233, 81545), (235, 80851), (347, 54755), (1165, 16309), (1735, 10951)]