20040988

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{881}}^1$

素因数の和:954

約数の個数: 36

約数和(自身を含む): 39414816

約数和(自身を除く): 19373828

約数列:

[1, 2, 4, 11, 22, 44, 47, 94, 121, 188, 242, 484, 517, 881, 1034, 1762, 2068, 3524, 5687, 9691, 11374, 19382, 22748, 38764, 41407, 82814, 106601, 165628, 213202, 426404, 455477, 910954, 1821908, 5010247, 10020494, 20040988]

約数ペア:

[(1, 20040988), (2, 10020494), (4, 5010247), (11, 1821908), (22, 910954), (44, 455477), (47, 426404), (94, 213202), (121, 165628), (188, 106601), (242, 82814), (484, 41407), (517, 38764), (881, 22748), (1034, 19382), (1762, 11374), (2068, 9691), (3524, 5687)]