21228291

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{6607}}^1$

素因数の和:6640

約数の個数: 32

約数和(自身を含む): 38062080

約数和(自身を除く): 16833789

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 119, 153, 189, 357, 459, 1071, 3213, 6607, 19821, 46249, 59463, 112319, 138747, 178389, 336957, 416241, 786233, 1010871, 1248723, 2358699, 3032613, 7076097, 21228291]

約数ペア:

[(1, 21228291), (3, 7076097), (7, 3032613), (9, 2358699), (17, 1248723), (21, 1010871), (27, 786233), (51, 416241), (63, 336957), (119, 178389), (153, 138747), (189, 112319), (357, 59463), (459, 46249), (1071, 19821), (3213, 6607)]