20518421

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{439}}^1\times {\mathrm{607}}^1$

素因数の和:1064

約数の個数: 16

約数和(自身を含む): 25681920

約数和(自身を除く): 5163499

約数列:

[1, 7, 11, 77, 439, 607, 3073, 4249, 4829, 6677, 33803, 46739, 266473, 1865311, 2931203, 20518421]

約数ペア:

[(1, 20518421), (7, 2931203), (11, 1865311), (77, 266473), (439, 46739), (607, 33803), (3073, 6677), (4249, 4829)]