21227185

素因数分解:

$5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{3863}}^1$

素因数の和:4032

約数の個数: 16

約数和(自身を含む): 29304576

約数和(自身を除く): 8077391

約数列:

[1, 5, 7, 35, 157, 785, 1099, 3863, 5495, 19315, 27041, 135205, 606491, 3032455, 4245437, 21227185]

約数ペア:

[(1, 21227185), (5, 4245437), (7, 3032455), (35, 606491), (157, 135205), (785, 27041), (1099, 19315), (3863, 5495)]