20041456

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{223}}^1$

素因数の和:409

約数の個数: 40

約数和(自身を含む): 40247424

約数和(自身を除く): 20205968

約数列:

[1, 2, 4, 8, 16, 41, 82, 137, 164, 223, 274, 328, 446, 548, 656, 892, 1096, 1784, 2192, 3568, 5617, 9143, 11234, 18286, 22468, 30551, 36572, 44936, 61102, 73144, 89872, 122204, 146288, 244408, 488816, 1252591, 2505182, 5010364, 10020728, 20041456]

約数ペア:

[(1, 20041456), (2, 10020728), (4, 5010364), (8, 2505182), (16, 1252591), (41, 488816), (82, 244408), (137, 146288), (164, 122204), (223, 89872), (274, 73144), (328, 61102), (446, 44936), (548, 36572), (656, 30551), (892, 22468), (1096, 18286), (1784, 11234), (2192, 9143), (3568, 5617)]