27801389

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{613}}^1$

素因数の和:681

約数の個数: 32

約数和(自身を含む): 37724160

約数和(自身を除く): 9922771

約数列:

[1, 7, 11, 19, 31, 77, 133, 209, 217, 341, 589, 613, 1463, 2387, 4123, 4291, 6479, 6743, 11647, 19003, 45353, 47201, 81529, 128117, 133021, 209033, 361057, 896819, 1463231, 2527399, 3971627, 27801389]

約数ペア:

[(1, 27801389), (7, 3971627), (11, 2527399), (19, 1463231), (31, 896819), (77, 361057), (133, 209033), (209, 133021), (217, 128117), (341, 81529), (589, 47201), (613, 45353), (1463, 19003), (2387, 11647), (4123, 6743), (4291, 6479)]