989995

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{613}}^1$

素因数の和:654

約数の個数: 16

約数和(自身を含む): 1326240

約数和(自身を除く): 336245

約数列:

[1, 5, 17, 19, 85, 95, 323, 613, 1615, 3065, 10421, 11647, 52105, 58235, 197999, 989995]

約数ペア:

[(1, 989995), (5, 197999), (17, 58235), (19, 52105), (85, 11647), (95, 10421), (323, 3065), (613, 1615)]