20964724

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 41622336

約数和(自身を除く): 20657612

約数列:

[1, 2, 4, 11, 22, 44, 61, 73, 107, 122, 146, 214, 244, 292, 428, 671, 803, 1177, 1342, 1606, 2354, 2684, 3212, 4453, 4708, 6527, 7811, 8906, 13054, 15622, 17812, 26108, 31244, 48983, 71797, 85921, 97966, 143594, 171842, 195932, 287188, 343684, 476471, 952942, 1905884, 5241181, 10482362, 20964724]

約数ペア:

[(1, 20964724), (2, 10482362), (4, 5241181), (11, 1905884), (22, 952942), (44, 476471), (61, 343684), (73, 287188), (107, 195932), (122, 171842), (146, 143594), (214, 97966), (244, 85921), (292, 71797), (428, 48983), (671, 31244), (803, 26108), (1177, 17812), (1342, 15622), (1606, 13054), (2354, 8906), (2684, 7811), (3212, 6527), (4453, 4708)]