21992067

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15971}}^1$

素因数の和:16000

約数の個数: 20

約数和(自身を含む): 34787016

約数和(自身を除く): 12794949

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15971, 47913, 143739, 271507, 431217, 814521, 1293651, 2443563, 7330689, 21992067]

約数ペア:

[(1, 21992067), (3, 7330689), (9, 2443563), (17, 1293651), (27, 814521), (51, 431217), (81, 271507), (153, 143739), (459, 47913), (1377, 15971)]