21809265

素因数分解:

$3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{13339}}^1$

素因数の和:13456

約数の個数: 16

約数和(自身を含む): 35217600

約数和(自身を除く): 13408335

約数列:

[1, 3, 5, 15, 109, 327, 545, 1635, 13339, 40017, 66695, 200085, 1453951, 4361853, 7269755, 21809265]

約数ペア:

[(1, 21809265), (3, 7269755), (5, 4361853), (15, 1453951), (109, 200085), (327, 66695), (545, 40017), (1635, 13339)]