18409090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{643}}^1$

素因数の和:1066

約数の個数: 32

約数和(自身を含む): 38021760

約数和(自身を除く): 19612670

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 409, 643, 818, 1286, 2045, 2863, 3215, 4090, 4501, 5726, 6430, 9002, 14315, 22505, 28630, 45010, 262987, 525974, 1314935, 1840909, 2629870, 3681818, 9204545, 18409090]

約数ペア:

[(1, 18409090), (2, 9204545), (5, 3681818), (7, 2629870), (10, 1840909), (14, 1314935), (35, 525974), (70, 262987), (409, 45010), (643, 28630), (818, 22505), (1286, 14315), (2045, 9002), (2863, 6430), (3215, 5726), (4090, 4501)]