21091510

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17431}}^1$

素因数の和:17460

約数の個数: 24

約数和(自身を含む): 41732208

約数和(自身を除く): 20640698

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 17431, 34862, 87155, 174310, 191741, 383482, 958705, 1917410, 2109151, 4218302, 10545755, 21091510]

約数ペア:

[(1, 21091510), (2, 10545755), (5, 4218302), (10, 2109151), (11, 1917410), (22, 958705), (55, 383482), (110, 191741), (121, 174310), (242, 87155), (605, 34862), (1210, 17431)]