21584180

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{9901}}^1$

素因数の和:10019

約数の個数: 24

約数和(自身を含む): 45747240

約数和(自身を除く): 24163060

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 9901, 19802, 39604, 49505, 99010, 198020, 1079209, 2158418, 4316836, 5396045, 10792090, 21584180]

約数ペア:

[(1, 21584180), (2, 10792090), (4, 5396045), (5, 4316836), (10, 2158418), (20, 1079209), (109, 198020), (218, 99010), (436, 49505), (545, 39604), (1090, 19802), (2180, 9901)]