21308535

素因数分解:

$3^3\times 5^1\times {\mathrm{157841}}^1$

素因数の和:157855

約数の個数: 16

約数和(自身を含む): 37882080

約数和(自身を除く): 16573545

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 157841, 473523, 789205, 1420569, 2367615, 4261707, 7102845, 21308535]

約数ペア:

[(1, 21308535), (3, 7102845), (5, 4261707), (9, 2367615), (15, 1420569), (27, 789205), (45, 473523), (135, 157841)]