21281656

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{941}}^1$

素因数の和:1215

約数の個数: 32

約数和(自身を含む): 43746480

約数和(自身を除く): 22464824

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 257, 514, 941, 1028, 1882, 2056, 2827, 3764, 5654, 7528, 10351, 11308, 20702, 22616, 41404, 82808, 241837, 483674, 967348, 1934696, 2660207, 5320414, 10640828, 21281656]

約数ペア:

[(1, 21281656), (2, 10640828), (4, 5320414), (8, 2660207), (11, 1934696), (22, 967348), (44, 483674), (88, 241837), (257, 82808), (514, 41404), (941, 22616), (1028, 20702), (1882, 11308), (2056, 10351), (2827, 7528), (3764, 5654)]