9815090

素因数分解:

$2^1\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1999}}^1$

素因数の和:2497

約数の個数: 16

約数和(自身を含む): 17712000

約数和(自身を除く): 7896910

約数列:

[1, 2, 5, 10, 491, 982, 1999, 2455, 3998, 4910, 9995, 19990, 981509, 1963018, 4907545, 9815090]

約数ペア:

[(1, 9815090), (2, 4907545), (5, 1963018), (10, 981509), (491, 19990), (982, 9995), (1999, 4910), (2455, 3998)]