81551211

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{313}}^1\times {\mathrm{653}}^1$

素因数の和:995

約数の個数: 32

約数和(自身を含む): 131427840

約数和(自身を除く): 49876629

約数列:

[1, 3, 7, 19, 21, 57, 133, 313, 399, 653, 939, 1959, 2191, 4571, 5947, 6573, 12407, 13713, 17841, 37221, 41629, 86849, 124887, 204389, 260547, 613167, 1430723, 3883391, 4292169, 11650173, 27183737, 81551211]

約数ペア:

[(1, 81551211), (3, 27183737), (7, 11650173), (19, 4292169), (21, 3883391), (57, 1430723), (133, 613167), (313, 260547), (399, 204389), (653, 124887), (939, 86849), (1959, 41629), (2191, 37221), (4571, 17841), (5947, 13713), (6573, 12407)]