21338961

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{8539}}^1$

素因数の和:8573

約数の個数: 24

約数和(自身を含む): 35048160

約数和(自身を除く): 13709199

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 8539, 25617, 59773, 145163, 179319, 418411, 435489, 1016141, 1255233, 3048423, 7112987, 21338961]

約数ペア:

[(1, 21338961), (3, 7112987), (7, 3048423), (17, 1255233), (21, 1016141), (49, 435489), (51, 418411), (119, 179319), (147, 145163), (357, 59773), (833, 25617), (2499, 8539)]