20907733

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{461}}^1$

素因数の和:529

約数の個数: 32

約数和(自身を含む): 28385280

約数和(自身を除く): 7477547

約数列:

[1, 7, 11, 19, 31, 77, 133, 209, 217, 341, 461, 589, 1463, 2387, 3227, 4123, 5071, 6479, 8759, 14291, 35497, 45353, 61313, 96349, 100037, 157201, 271529, 674443, 1100407, 1900703, 2986819, 20907733]

約数ペア:

[(1, 20907733), (7, 2986819), (11, 1900703), (19, 1100407), (31, 674443), (77, 271529), (133, 157201), (209, 100037), (217, 96349), (341, 61313), (461, 45353), (589, 35497), (1463, 14291), (2387, 8759), (3227, 6479), (4123, 5071)]