21191345

素因数分解:

$5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{6803}}^1$

素因数の和:6904

約数の個数: 16

約数和(自身を含む): 29393280

約数和(自身を除く): 8201935

約数列:

[1, 5, 7, 35, 89, 445, 623, 3115, 6803, 34015, 47621, 238105, 605467, 3027335, 4238269, 21191345]

約数ペア:

[(1, 21191345), (5, 4238269), (7, 3027335), (35, 605467), (89, 238105), (445, 47621), (623, 34015), (3115, 6803)]