989968265

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{19501}}^1$

素因数の和:19601

約数の個数: 32

約数和(自身を含む): 1415377152

約数和(自身を除く): 425408887

約数列:

[1, 5, 11, 13, 55, 65, 71, 143, 355, 715, 781, 923, 3905, 4615, 10153, 19501, 50765, 97505, 214511, 253513, 1072555, 1267565, 1384571, 2788643, 6922855, 13943215, 15230281, 17999423, 76151405, 89997115, 197993653, 989968265]

約数ペア:

[(1, 989968265), (5, 197993653), (11, 89997115), (13, 76151405), (55, 17999423), (65, 15230281), (71, 13943215), (143, 6922855), (355, 2788643), (715, 1384571), (781, 1267565), (923, 1072555), (3905, 253513), (4615, 214511), (10153, 97505), (19501, 50765)]