128575321

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{4523}}^1$

素因数の和:4692

約数の個数: 16

約数和(自身を含む): 152875008

約数和(自身を除く): 24299687

約数列:

[1, 7, 31, 131, 217, 917, 4061, 4523, 28427, 31661, 140213, 592513, 981491, 4147591, 18367903, 128575321]

約数ペア:

[(1, 128575321), (7, 18367903), (31, 4147591), (131, 981491), (217, 592513), (917, 140213), (4061, 31661), (4523, 28427)]