7887681

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{643}}^1$

素因数の和:725

約数の個数: 24

約数和(自身を含む): 12055680

約数和(自身を除く): 4167999

約数列:

[1, 3, 9, 29, 47, 87, 141, 261, 423, 643, 1363, 1929, 4089, 5787, 12267, 18647, 30221, 55941, 90663, 167823, 271989, 876409, 2629227, 7887681]

約数ペア:

[(1, 7887681), (3, 2629227), (9, 876409), (29, 271989), (47, 167823), (87, 90663), (141, 55941), (261, 30221), (423, 18647), (643, 12267), (1363, 5787), (1929, 4089)]