21257667

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1597}}^1$

素因数の和:1652

約数の個数: 32

約数和(自身を含む): 34516800

約数和(自身を除く): 13259133

約数列:

[1, 3, 9, 17, 27, 29, 51, 87, 153, 261, 459, 493, 783, 1479, 1597, 4437, 4791, 13311, 14373, 27149, 43119, 46313, 81447, 138939, 244341, 416817, 733023, 787321, 1250451, 2361963, 7085889, 21257667]

約数ペア:

[(1, 21257667), (3, 7085889), (9, 2361963), (17, 1250451), (27, 787321), (29, 733023), (51, 416817), (87, 244341), (153, 138939), (261, 81447), (459, 46313), (493, 43119), (783, 27149), (1479, 14373), (1597, 13311), (4437, 4791)]