21025989

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{2999}}^1$

素因数の和:3065

約数の個数: 24

約数和(自身を含む): 32760000

約数和(自身を除く): 11734011

約数列:

[1, 3, 9, 19, 41, 57, 123, 171, 369, 779, 2337, 2999, 7011, 8997, 26991, 56981, 122959, 170943, 368877, 512829, 1106631, 2336221, 7008663, 21025989]

約数ペア:

[(1, 21025989), (3, 7008663), (9, 2336221), (19, 1106631), (41, 512829), (57, 368877), (123, 170943), (171, 122959), (369, 56981), (779, 26991), (2337, 8997), (2999, 7011)]