18520271

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{3943}}^1$

素因数の和:4022

約数の個数: 16

約数和(自身を含む): 23474688

約数和(自身を除く): 4954417

約数列:

[1, 7, 11, 61, 77, 427, 671, 3943, 4697, 27601, 43373, 240523, 303611, 1683661, 2645753, 18520271]

約数ペア:

[(1, 18520271), (7, 2645753), (11, 1683661), (61, 303611), (77, 240523), (427, 43373), (671, 27601), (3943, 4697)]