21139657

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{293}}^1\times {\mathrm{937}}^1$

素因数の和:1248

約数の個数: 16

約数和(自身を含む): 26474112

約数和(自身を除く): 5334455

約数列:

[1, 7, 11, 77, 293, 937, 2051, 3223, 6559, 10307, 22561, 72149, 274541, 1921787, 3019951, 21139657]

約数ペア:

[(1, 21139657), (7, 3019951), (11, 1921787), (77, 274541), (293, 72149), (937, 22561), (2051, 10307), (3223, 6559)]