18986005

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{233}}^1\times {\mathrm{379}}^1$

素因数の和:660

約数の個数: 16

約数和(自身を含む): 23474880

約数和(自身を除く): 4488875

約数列:

[1, 5, 43, 215, 233, 379, 1165, 1895, 10019, 16297, 50095, 81485, 88307, 441535, 3797201, 18986005]

約数ペア:

[(1, 18986005), (5, 3797201), (43, 441535), (215, 88307), (233, 81485), (379, 50095), (1165, 16297), (1895, 10019)]