18818090

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{409}}^1$

素因数の和:566

約数の個数: 32

約数和(自身を含む): 35069760

約数和(自身を除く): 16251670

約数列:

[1, 2, 5, 10, 43, 86, 107, 214, 215, 409, 430, 535, 818, 1070, 2045, 4090, 4601, 9202, 17587, 23005, 35174, 43763, 46010, 87526, 87935, 175870, 218815, 437630, 1881809, 3763618, 9409045, 18818090]

約数ペア:

[(1, 18818090), (2, 9409045), (5, 3763618), (10, 1881809), (43, 437630), (86, 218815), (107, 175870), (214, 87935), (215, 87526), (409, 46010), (430, 43763), (535, 35174), (818, 23005), (1070, 17587), (2045, 9202), (4090, 4601)]