20940997

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{631}}^1$

素因数の和:1080

約数の個数: 16

約数和(自身を含む): 26210304

約数和(自身を除く): 5269307

約数列:

[1, 7, 11, 77, 431, 631, 3017, 4417, 4741, 6941, 33187, 48587, 271961, 1903727, 2991571, 20940997]

約数ペア:

[(1, 20940997), (7, 2991571), (11, 1903727), (77, 271961), (431, 48587), (631, 33187), (3017, 6941), (4417, 4741)]