20990050

素因数分解:

$2^1\times 5^2\times {\mathrm{419801}}^1$

素因数の和:419813

約数の個数: 12

約数和(自身を含む): 39041586

約数和(自身を除く): 18051536

約数列:

[1, 2, 5, 10, 25, 50, 419801, 839602, 2099005, 4198010, 10495025, 20990050]

約数ペア:

[(1, 20990050), (2, 10495025), (5, 4198010), (10, 2099005), (25, 839602), (50, 419801)]