21205531876

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{2860973}}^1$

素因数の和:2861103

約数の個数: 24

約数和(自身を含む): 39653099640

約数和(自身を除く): 18447567764

約数列:

[1, 2, 4, 17, 34, 68, 109, 218, 436, 1853, 3706, 7412, 2860973, 5721946, 11443892, 48636541, 97273082, 194546164, 311846057, 623692114, 1247384228, 5301382969, 10602765938, 21205531876]

約数ペア:

[(1, 21205531876), (2, 10602765938), (4, 5301382969), (17, 1247384228), (34, 623692114), (68, 311846057), (109, 194546164), (218, 97273082), (436, 48636541), (1853, 11443892), (3706, 5721946), (7412, 2860973)]