18849987

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2207}}^1$

素因数の和:2299

約数の個数: 24

約数和(自身を含む): 29737344

約数和(自身を除く): 10887357

約数列:

[1, 3, 9, 13, 39, 73, 117, 219, 657, 949, 2207, 2847, 6621, 8541, 19863, 28691, 86073, 161111, 258219, 483333, 1449999, 2094443, 6283329, 18849987]

約数ペア:

[(1, 18849987), (3, 6283329), (9, 2094443), (13, 1449999), (39, 483333), (73, 258219), (117, 161111), (219, 86073), (657, 28691), (949, 19863), (2207, 8541), (2847, 6621)]