21919041

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{613}}^1$

素因数の和:785

約数の個数: 24

約数和(自身を含む): 33045480

約数和(自身を除く): 11126439

約数列:

[1, 3, 9, 29, 87, 137, 261, 411, 613, 1233, 1839, 3973, 5517, 11919, 17777, 35757, 53331, 83981, 159993, 251943, 755829, 2435449, 7306347, 21919041]

約数ペア:

[(1, 21919041), (3, 7306347), (9, 2435449), (29, 755829), (87, 251943), (137, 159993), (261, 83981), (411, 53331), (613, 35757), (1233, 17777), (1839, 11919), (3973, 5517)]