16664165

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{4001}}^1$

素因数の和:4037

約数の個数: 24

約数和(自身を含む): 24636312

約数和(自身を除く): 7972147

約数列:

[1, 5, 7, 17, 35, 49, 85, 119, 245, 595, 833, 4001, 4165, 20005, 28007, 68017, 140035, 196049, 340085, 476119, 980245, 2380595, 3332833, 16664165]

約数ペア:

[(1, 16664165), (5, 3332833), (7, 2380595), (17, 980245), (35, 476119), (49, 340085), (85, 196049), (119, 140035), (245, 68017), (595, 28007), (833, 20005), (4001, 4165)]