20810848

素因数分解:

$2^5\times {\mathrm{47}}^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1$

素因数の和:295

約数の個数: 48

約数和(自身を含む): 42565824

約数和(自身を除く): 21754976

約数列:

[1, 2, 4, 8, 16, 32, 47, 94, 101, 137, 188, 202, 274, 376, 404, 548, 752, 808, 1096, 1504, 1616, 2192, 3232, 4384, 4747, 6439, 9494, 12878, 13837, 18988, 25756, 27674, 37976, 51512, 55348, 75952, 103024, 110696, 151904, 206048, 221392, 442784, 650339, 1300678, 2601356, 5202712, 10405424, 20810848]

約数ペア:

[(1, 20810848), (2, 10405424), (4, 5202712), (8, 2601356), (16, 1300678), (32, 650339), (47, 442784), (94, 221392), (101, 206048), (137, 151904), (188, 110696), (202, 103024), (274, 75952), (376, 55348), (404, 51512), (548, 37976), (752, 27674), (808, 25756), (1096, 18988), (1504, 13837), (1616, 12878), (2192, 9494), (3232, 6439), (4384, 4747)]