20780137

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:229

約数の個数: 32

約数和(自身を含む): 26763264

約数和(自身を除く): 5983127

約数列:

[1, 7, 17, 31, 43, 119, 131, 217, 301, 527, 731, 917, 1333, 2227, 3689, 4061, 5117, 5633, 9331, 15589, 22661, 28427, 39431, 69037, 95761, 158627, 174623, 483259, 670327, 1222361, 2968591, 20780137]

約数ペア:

[(1, 20780137), (7, 2968591), (17, 1222361), (31, 670327), (43, 483259), (119, 174623), (131, 158627), (217, 95761), (301, 69037), (527, 39431), (731, 28427), (917, 22661), (1333, 15589), (2227, 9331), (3689, 5633), (4061, 5117)]