1991637

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{613}}^1$

素因数の和:657

約数の個数: 18

約数和(自身を含む): 3041142

約数和(自身を除く): 1049505

約数列:

[1, 3, 9, 19, 57, 171, 361, 613, 1083, 1839, 3249, 5517, 11647, 34941, 104823, 221293, 663879, 1991637]

約数ペア:

[(1, 1991637), (3, 663879), (9, 221293), (19, 104823), (57, 34941), (171, 11647), (361, 5517), (613, 3249), (1083, 1839)]