20181898

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{2179}}^1$

素因数の和:2613

約数の個数: 16

約数和(自身を含む): 33118560

約数和(自身を除く): 12936662

約数列:

[1, 2, 11, 22, 421, 842, 2179, 4358, 4631, 9262, 23969, 47938, 917359, 1834718, 10090949, 20181898]

約数ペア:

[(1, 20181898), (2, 10090949), (11, 1834718), (22, 917359), (421, 47938), (842, 23969), (2179, 9262), (4358, 4631)]