257668112

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{1238789}}^1$

素因数の和:1238810

約数の個数: 20

約数和(自身を含む): 537634860

約数和(自身を除く): 279966748

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 1238789, 2477578, 4955156, 9910312, 16104257, 19820624, 32208514, 64417028, 128834056, 257668112]

約数ペア:

[(1, 257668112), (2, 128834056), (4, 64417028), (8, 32208514), (13, 19820624), (16, 16104257), (26, 9910312), (52, 4955156), (104, 2477578), (208, 1238789)]