18267991

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{443}}^1$

素因数の和:630

約数の個数: 16

約数和(自身を含む): 21567744

約数和(自身を除く): 3299753

約数列:

[1, 7, 43, 137, 301, 443, 959, 3101, 5891, 19049, 41237, 60691, 133343, 424837, 2609713, 18267991]

約数ペア:

[(1, 18267991), (7, 2609713), (43, 424837), (137, 133343), (301, 60691), (443, 41237), (959, 19049), (3101, 5891)]