21451418

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{5179}}^1$

素因数の和:5309

約数の個数: 16

約数和(自身を含む): 34188000

約数和(自身を除く): 12736582

約数列:

[1, 2, 19, 38, 109, 218, 2071, 4142, 5179, 10358, 98401, 196802, 564511, 1129022, 10725709, 21451418]

約数ペア:

[(1, 21451418), (2, 10725709), (19, 1129022), (38, 564511), (109, 196802), (218, 98401), (2071, 10358), (4142, 5179)]