20804007

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{31957}}^1$

素因数の和:31998

約数の個数: 16

約数和(自身を含む): 32724992

約数和(自身を除く): 11920985

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 31957, 95871, 223699, 671097, 990667, 2972001, 6934669, 20804007]

約数ペア:

[(1, 20804007), (3, 6934669), (7, 2972001), (21, 990667), (31, 671097), (93, 223699), (217, 95871), (651, 31957)]