21209363

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{2273}}^1$

素因数の和:2354

約数の個数: 16

約数和(自身を含む): 25614336

約数和(自身を除く): 4404973

約数列:

[1, 7, 31, 43, 217, 301, 1333, 2273, 9331, 15911, 70463, 97739, 493241, 684173, 3029909, 21209363]

約数ペア:

[(1, 21209363), (7, 3029909), (31, 684173), (43, 493241), (217, 97739), (301, 70463), (1333, 15911), (2273, 9331)]