21166173

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19763}}^1$

素因数の和:19793

約数の個数: 24

約数和(自身を含む): 36998208

約数和(自身を除く): 15832035

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19763, 59289, 138341, 177867, 335971, 415023, 1007913, 1245069, 2351797, 3023739, 7055391, 21166173]

約数ペア:

[(1, 21166173), (3, 7055391), (7, 3023739), (9, 2351797), (17, 1245069), (21, 1007913), (51, 415023), (63, 335971), (119, 177867), (153, 138341), (357, 59289), (1071, 19763)]