20738367

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{491}}^1$

素因数の和:548

約数の個数: 36

約数和(自身を含む): 34116264

約数和(自身を除く): 13377897

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 361, 491, 741, 1083, 1473, 2223, 3249, 4419, 4693, 6383, 9329, 14079, 19149, 27987, 42237, 57447, 83961, 121277, 177251, 363831, 531753, 1091493, 1595259, 2304263, 6912789, 20738367]

約数ペア:

[(1, 20738367), (3, 6912789), (9, 2304263), (13, 1595259), (19, 1091493), (39, 531753), (57, 363831), (117, 177251), (171, 121277), (247, 83961), (361, 57447), (491, 42237), (741, 27987), (1083, 19149), (1473, 14079), (2223, 9329), (3249, 6383), (4419, 4693)]