20213564

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^2\times {\mathrm{257}}^1$

素因数の和:374

約数の個数: 36

約数和(自身を含む): 41364624

約数和(自身を除く): 21151060

約数列:

[1, 2, 4, 7, 14, 28, 53, 106, 212, 257, 371, 514, 742, 1028, 1484, 1799, 2809, 3598, 5618, 7196, 11236, 13621, 19663, 27242, 39326, 54484, 78652, 95347, 190694, 381388, 721913, 1443826, 2887652, 5053391, 10106782, 20213564]

約数ペア:

[(1, 20213564), (2, 10106782), (4, 5053391), (7, 2887652), (14, 1443826), (28, 721913), (53, 381388), (106, 190694), (212, 95347), (257, 78652), (371, 54484), (514, 39326), (742, 27242), (1028, 19663), (1484, 13621), (1799, 11236), (2809, 7196), (3598, 5618)]