20647316

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{53}}^1\times {\mathrm{337}}^1$

素因数の和:428

約数の個数: 36

約数和(自身を含む): 39223548

約数和(自身を除く): 18576232

約数列:

[1, 2, 4, 17, 34, 53, 68, 106, 212, 289, 337, 578, 674, 901, 1156, 1348, 1802, 3604, 5729, 11458, 15317, 17861, 22916, 30634, 35722, 61268, 71444, 97393, 194786, 303637, 389572, 607274, 1214548, 5161829, 10323658, 20647316]

約数ペア:

[(1, 20647316), (2, 10323658), (4, 5161829), (17, 1214548), (34, 607274), (53, 389572), (68, 303637), (106, 194786), (212, 97393), (289, 71444), (337, 61268), (578, 35722), (674, 30634), (901, 22916), (1156, 17861), (1348, 15317), (1802, 11458), (3604, 5729)]