689229

素因数分解:

$3^4\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:206

約数の個数: 20

約数和(自身を含む): 1053184

約数和(自身を除く): 363955

約数列:

[1, 3, 9, 27, 67, 81, 127, 201, 381, 603, 1143, 1809, 3429, 5427, 8509, 10287, 25527, 76581, 229743, 689229]

約数ペア:

[(1, 689229), (3, 229743), (9, 76581), (27, 25527), (67, 10287), (81, 8509), (127, 5427), (201, 3429), (381, 1809), (603, 1143)]