21380524

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{571}}^1$

素因数の和:646

約数の個数: 48

約数和(自身を含む): 43819776

約数和(自身を除く): 22439252

約数列:

[1, 2, 4, 11, 22, 23, 37, 44, 46, 74, 92, 148, 253, 407, 506, 571, 814, 851, 1012, 1142, 1628, 1702, 2284, 3404, 6281, 9361, 12562, 13133, 18722, 21127, 25124, 26266, 37444, 42254, 52532, 84508, 144463, 232397, 288926, 464794, 485921, 577852, 929588, 971842, 1943684, 5345131, 10690262, 21380524]

約数ペア:

[(1, 21380524), (2, 10690262), (4, 5345131), (11, 1943684), (22, 971842), (23, 929588), (37, 577852), (44, 485921), (46, 464794), (74, 288926), (92, 232397), (148, 144463), (253, 84508), (407, 52532), (506, 42254), (571, 37444), (814, 26266), (851, 25124), (1012, 21127), (1142, 18722), (1628, 13133), (1702, 12562), (2284, 9361), (3404, 6281)]