20958868

素因数分解:

$2^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{1753}}^1$

素因数の和:1832

約数の個数: 36

約数和(自身を含む): 43390452

約数和(自身を除く): 22431584

約数列:

[1, 2, 4, 7, 14, 28, 49, 61, 98, 122, 196, 244, 427, 854, 1708, 1753, 2989, 3506, 5978, 7012, 11956, 12271, 24542, 49084, 85897, 106933, 171794, 213866, 343588, 427732, 748531, 1497062, 2994124, 5239717, 10479434, 20958868]

約数ペア:

[(1, 20958868), (2, 10479434), (4, 5239717), (7, 2994124), (14, 1497062), (28, 748531), (49, 427732), (61, 343588), (98, 213866), (122, 171794), (196, 106933), (244, 85897), (427, 49084), (854, 24542), (1708, 12271), (1753, 11956), (2989, 7012), (3506, 5978)]