21145671

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2003}}^1$

素因数の和:2052

約数の個数: 32

約数和(自身を含む): 34629120

約数和(自身を除く): 13483449

約数列:

[1, 3, 9, 17, 23, 27, 51, 69, 153, 207, 391, 459, 621, 1173, 2003, 3519, 6009, 10557, 18027, 34051, 46069, 54081, 102153, 138207, 306459, 414621, 783173, 919377, 1243863, 2349519, 7048557, 21145671]

約数ペア:

[(1, 21145671), (3, 7048557), (9, 2349519), (17, 1243863), (23, 919377), (27, 783173), (51, 414621), (69, 306459), (153, 138207), (207, 102153), (391, 54081), (459, 46069), (621, 34051), (1173, 18027), (2003, 10557), (3519, 6009)]