661288

素因数分解:

$2^3\times {\mathrm{131}}^1\times {\mathrm{631}}^1$

素因数の和:768

約数の個数: 16

約数和(自身を含む): 1251360

約数和(自身を除く): 590072

約数列:

[1, 2, 4, 8, 131, 262, 524, 631, 1048, 1262, 2524, 5048, 82661, 165322, 330644, 661288]

約数ペア:

[(1, 661288), (2, 330644), (4, 165322), (8, 82661), (131, 5048), (262, 2524), (524, 1262), (631, 1048)]