26881407

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{9923}}^1$

素因数の和:9979

約数の個数: 24

約数和(自身を含む): 45412224

約数和(自身を除く): 18530817

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 9923, 29769, 69461, 89307, 208383, 426689, 625149, 1280067, 2986823, 3840201, 8960469, 26881407]

約数ペア:

[(1, 26881407), (3, 8960469), (7, 3840201), (9, 2986823), (21, 1280067), (43, 625149), (63, 426689), (129, 208383), (301, 89307), (387, 69461), (903, 29769), (2709, 9923)]