28345359

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{3739}}^1$

素因数の和:3787

約数の個数: 24

約数和(自身を含む): 45598080

約数和(自身を除く): 17252721

約数列:

[1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 2527, 3739, 7581, 11217, 26173, 71041, 78519, 213123, 497287, 1349779, 1491861, 4049337, 9448453, 28345359]

約数ペア:

[(1, 28345359), (3, 9448453), (7, 4049337), (19, 1491861), (21, 1349779), (57, 497287), (133, 213123), (361, 78519), (399, 71041), (1083, 26173), (2527, 11217), (3739, 7581)]