7809020

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^2\times {\mathrm{139}}^1$

素因数の和:254

約数の個数: 36

約数和(自身を含む): 16834440

約数和(自身を除く): 9025420

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 139, 212, 265, 278, 530, 556, 695, 1060, 1390, 2780, 2809, 5618, 7367, 11236, 14045, 14734, 28090, 29468, 36835, 56180, 73670, 147340, 390451, 780902, 1561804, 1952255, 3904510, 7809020]

約数ペア:

[(1, 7809020), (2, 3904510), (4, 1952255), (5, 1561804), (10, 780902), (20, 390451), (53, 147340), (106, 73670), (139, 56180), (212, 36835), (265, 29468), (278, 28090), (530, 14734), (556, 14045), (695, 11236), (1060, 7367), (1390, 5618), (2780, 2809)]