28068680

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16319}}^1$

素因数の和:16373

約数の個数: 32

約数和(自身を含む): 64627200

約数和(自身を除く): 36558520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 16319, 32638, 65276, 81595, 130552, 163190, 326380, 652760, 701717, 1403434, 2806868, 3508585, 5613736, 7017170, 14034340, 28068680]

約数ペア:

[(1, 28068680), (2, 14034340), (4, 7017170), (5, 5613736), (8, 3508585), (10, 2806868), (20, 1403434), (40, 701717), (43, 652760), (86, 326380), (172, 163190), (215, 130552), (344, 81595), (430, 65276), (860, 32638), (1720, 16319)]