199049540

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{19553}}^1$

素因数の和:20071

約数の個数: 24

約数和(自身を含む): 418846680

約数和(自身を除く): 219797140

約数列:

[1, 2, 4, 5, 10, 20, 509, 1018, 2036, 2545, 5090, 10180, 19553, 39106, 78212, 97765, 195530, 391060, 9952477, 19904954, 39809908, 49762385, 99524770, 199049540]

約数ペア:

[(1, 199049540), (2, 99524770), (4, 49762385), (5, 39809908), (10, 19904954), (20, 9952477), (509, 391060), (1018, 195530), (2036, 97765), (2545, 78212), (5090, 39106), (10180, 19553)]