21344771

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{167}}^1$

素因数の和:255

約数の個数: 24

約数和(自身を含む): 26691840

約数和(自身を除く): 5347069

約数列:

[1, 7, 19, 31, 133, 167, 217, 589, 961, 1169, 3173, 4123, 5177, 6727, 18259, 22211, 36239, 98363, 127813, 160487, 688541, 1123409, 3049253, 21344771]

約数ペア:

[(1, 21344771), (7, 3049253), (19, 1123409), (31, 688541), (133, 160487), (167, 127813), (217, 98363), (589, 36239), (961, 22211), (1169, 18259), (3173, 6727), (4123, 5177)]