18890005

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{2593}}^1$

素因数の和:2676

約数の個数: 16

約数和(自身を含む): 23906304

約数和(自身を除く): 5016299

約数列:

[1, 5, 31, 47, 155, 235, 1457, 2593, 7285, 12965, 80383, 121871, 401915, 609355, 3778001, 18890005]

約数ペア:

[(1, 18890005), (5, 3778001), (31, 609355), (47, 401915), (155, 121871), (235, 80383), (1457, 12965), (2593, 7285)]