20419421

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{233}}^1\times {\mathrm{257}}^1$

素因数の和:532

約数の個数: 16

約数和(自身を含む): 23182848

約数和(自身を除く): 2763427

約数列:

[1, 11, 31, 233, 257, 341, 2563, 2827, 7223, 7967, 59881, 79453, 87637, 658691, 1856311, 20419421]

約数ペア:

[(1, 20419421), (11, 1856311), (31, 658691), (233, 87637), (257, 79453), (341, 59881), (2563, 7967), (2827, 7223)]