20937884

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{269}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 42184800

約数和(自身を除く): 21246916

約数列:

[1, 2, 4, 11, 22, 29, 44, 58, 61, 116, 122, 244, 269, 319, 538, 638, 671, 1076, 1276, 1342, 1769, 2684, 2959, 3538, 5918, 7076, 7801, 11836, 15602, 16409, 19459, 31204, 32818, 38918, 65636, 77836, 85811, 171622, 180499, 343244, 360998, 475861, 721996, 951722, 1903444, 5234471, 10468942, 20937884]

約数ペア:

[(1, 20937884), (2, 10468942), (4, 5234471), (11, 1903444), (22, 951722), (29, 721996), (44, 475861), (58, 360998), (61, 343244), (116, 180499), (122, 171622), (244, 85811), (269, 77836), (319, 65636), (538, 38918), (638, 32818), (671, 31204), (1076, 19459), (1276, 16409), (1342, 15602), (1769, 11836), (2684, 7801), (2959, 7076), (3538, 5918)]