15857289

素因数分解:

$3^4\times 7^1\times {\mathrm{27967}}^1$

素因数の和:27986

約数の個数: 20

約数和(自身を含む): 27073024

約数和(自身を除く): 11215735

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 27967, 83901, 195769, 251703, 587307, 755109, 1761921, 2265327, 5285763, 15857289]

約数ペア:

[(1, 15857289), (3, 5285763), (7, 2265327), (9, 1761921), (21, 755109), (27, 587307), (63, 251703), (81, 195769), (189, 83901), (567, 27967)]