28180287

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{739}}^1$

素因数の和:987

約数の個数: 24

約数和(自身を含む): 43097600

約数和(自身を除く): 14917313

約数列:

[1, 3, 9, 19, 57, 171, 223, 669, 739, 2007, 2217, 4237, 6651, 12711, 14041, 38133, 42123, 126369, 164797, 494391, 1483173, 3131143, 9393429, 28180287]

約数ペア:

[(1, 28180287), (3, 9393429), (9, 3131143), (19, 1483173), (57, 494391), (171, 164797), (223, 126369), (669, 42123), (739, 38133), (2007, 14041), (2217, 12711), (4237, 6651)]