21751605

素因数分解:

$3^3\times 5^1\times {\mathrm{161123}}^1$

素因数の和:161137

約数の個数: 16

約数和(自身を含む): 38669760

約数和(自身を除く): 16918155

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 161123, 483369, 805615, 1450107, 2416845, 4350321, 7250535, 21751605]

約数ペア:

[(1, 21751605), (3, 7250535), (5, 4350321), (9, 2416845), (15, 1450107), (27, 805615), (45, 483369), (135, 161123)]