99891981

素因数分解:

$3^3\times 7^1\times {\mathrm{727}}^2$

素因数の和:1470

約数の個数: 24

約数和(自身を含む): 169362240

約数和(自身を除く): 69470259

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 727, 2181, 5089, 6543, 15267, 19629, 45801, 137403, 528529, 1585587, 3699703, 4756761, 11099109, 14270283, 33297327, 99891981]

約数ペア:

[(1, 99891981), (3, 33297327), (7, 14270283), (9, 11099109), (21, 4756761), (27, 3699703), (63, 1585587), (189, 528529), (727, 137403), (2181, 45801), (5089, 19629), (6543, 15267)]