19918137

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{1567}}^1$

素因数の和:1812

約数の個数: 16

約数和(自身を含む): 28098560

約数和(自身を除く): 8180423

約数列:

[1, 3, 19, 57, 223, 669, 1567, 4237, 4701, 12711, 29773, 89319, 349441, 1048323, 6639379, 19918137]

約数ペア:

[(1, 19918137), (3, 6639379), (19, 1048323), (57, 349441), (223, 89319), (669, 29773), (1567, 12711), (4237, 4701)]