21133167

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{281}}^1$

素因数の和:391

約数の個数: 32

約数和(自身を含む): 32161536

約数和(自身を除く): 11028369

約数列:

[1, 3, 11, 33, 43, 53, 129, 159, 281, 473, 583, 843, 1419, 1749, 2279, 3091, 6837, 9273, 12083, 14893, 25069, 36249, 44679, 75207, 132913, 163823, 398739, 491469, 640399, 1921197, 7044389, 21133167]

約数ペア:

[(1, 21133167), (3, 7044389), (11, 1921197), (33, 640399), (43, 491469), (53, 398739), (129, 163823), (159, 132913), (281, 75207), (473, 44679), (583, 36249), (843, 25069), (1419, 14893), (1749, 12083), (2279, 9273), (3091, 6837)]