20170865

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{28211}}^1$

素因数の和:28240

約数の個数: 16

約数和(自身を含む): 28437696

約数和(自身を除く): 8266831

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 28211, 141055, 310321, 366743, 1551605, 1833715, 4034173, 20170865]

約数ペア:

[(1, 20170865), (5, 4034173), (11, 1833715), (13, 1551605), (55, 366743), (65, 310321), (143, 141055), (715, 28211)]