20711265

素因数分解:

$3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{5501}}^1$

素因数の和:5760

約数の個数: 16

約数和(自身を含む): 33276096

約数和(自身を除く): 12564831

約数列:

[1, 3, 5, 15, 251, 753, 1255, 3765, 5501, 16503, 27505, 82515, 1380751, 4142253, 6903755, 20711265]

約数ペア:

[(1, 20711265), (3, 6903755), (5, 4142253), (15, 1380751), (251, 82515), (753, 27505), (1255, 16503), (3765, 5501)]