20303452

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^2\times {\mathrm{139}}^1$

素因数の和:262

約数の個数: 36

約数和(自身を含む): 39280360

約数和(自身を除く): 18976908

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 139, 212, 278, 556, 689, 1378, 1807, 2756, 2809, 3614, 5618, 7228, 7367, 11236, 14734, 29468, 36517, 73034, 95771, 146068, 191542, 383084, 390451, 780902, 1561804, 5075863, 10151726, 20303452]

約数ペア:

[(1, 20303452), (2, 10151726), (4, 5075863), (13, 1561804), (26, 780902), (52, 390451), (53, 383084), (106, 191542), (139, 146068), (212, 95771), (278, 73034), (556, 36517), (689, 29468), (1378, 14734), (1807, 11236), (2756, 7367), (2809, 7228), (3614, 5618)]