20481868

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{547}}^1$

素因数の和:622

約数の個数: 48

約数和(自身を含む): 41981184

約数和(自身を除く): 21499316

約数列:

[1, 2, 4, 11, 22, 23, 37, 44, 46, 74, 92, 148, 253, 407, 506, 547, 814, 851, 1012, 1094, 1628, 1702, 2188, 3404, 6017, 9361, 12034, 12581, 18722, 20239, 24068, 25162, 37444, 40478, 50324, 80956, 138391, 222629, 276782, 445258, 465497, 553564, 890516, 930994, 1861988, 5120467, 10240934, 20481868]

約数ペア:

[(1, 20481868), (2, 10240934), (4, 5120467), (11, 1861988), (22, 930994), (23, 890516), (37, 553564), (44, 465497), (46, 445258), (74, 276782), (92, 222629), (148, 138391), (253, 80956), (407, 50324), (506, 40478), (547, 37444), (814, 25162), (851, 24068), (1012, 20239), (1094, 18722), (1628, 12581), (1702, 12034), (2188, 9361), (3404, 6017)]