20644316

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{691}}^1$

素因数の和:810

約数の個数: 48

約数和(自身を含む): 45572352

約数和(自身を除く): 24928036

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 97, 154, 194, 308, 388, 679, 691, 1067, 1358, 1382, 2134, 2716, 2764, 4268, 4837, 7469, 7601, 9674, 14938, 15202, 19348, 29876, 30404, 53207, 67027, 106414, 134054, 212828, 268108, 469189, 737297, 938378, 1474594, 1876756, 2949188, 5161079, 10322158, 20644316]

約数ペア:

[(1, 20644316), (2, 10322158), (4, 5161079), (7, 2949188), (11, 1876756), (14, 1474594), (22, 938378), (28, 737297), (44, 469189), (77, 268108), (97, 212828), (154, 134054), (194, 106414), (308, 67027), (388, 53207), (679, 30404), (691, 29876), (1067, 19348), (1358, 15202), (1382, 14938), (2134, 9674), (2716, 7601), (2764, 7469), (4268, 4837)]