20786324

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{97}}^1\times {\mathrm{317}}^1$

素因数の和:444

約数の個数: 36

約数和(自身を含む): 39921084

約数和(自身を除く): 19134760

約数列:

[1, 2, 4, 13, 26, 52, 97, 169, 194, 317, 338, 388, 634, 676, 1261, 1268, 2522, 4121, 5044, 8242, 16393, 16484, 30749, 32786, 53573, 61498, 65572, 107146, 122996, 214292, 399737, 799474, 1598948, 5196581, 10393162, 20786324]

約数ペア:

[(1, 20786324), (2, 10393162), (4, 5196581), (13, 1598948), (26, 799474), (52, 399737), (97, 214292), (169, 122996), (194, 107146), (317, 65572), (338, 61498), (388, 53573), (634, 32786), (676, 30749), (1261, 16484), (1268, 16393), (2522, 8242), (4121, 5044)]