20884755

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{81901}}^1$

素因数の和:81926

約数の個数: 16

約数和(自身を含む): 35381664

約数和(自身を除く): 14496909

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 81901, 245703, 409505, 1228515, 1392317, 4176951, 6961585, 20884755]

約数ペア:

[(1, 20884755), (3, 6961585), (5, 4176951), (15, 1392317), (17, 1228515), (51, 409505), (85, 245703), (255, 81901)]