28684280

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{2857}}^1$

素因数の和:3119

約数の個数: 32

約数和(自身を含む): 64819440

約数和(自身を除く): 36135160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 2857, 5020, 5714, 10040, 11428, 14285, 22856, 28570, 57140, 114280, 717107, 1434214, 2868428, 3585535, 5736856, 7171070, 14342140, 28684280]

約数ペア:

[(1, 28684280), (2, 14342140), (4, 7171070), (5, 5736856), (8, 3585535), (10, 2868428), (20, 1434214), (40, 717107), (251, 114280), (502, 57140), (1004, 28570), (1255, 22856), (2008, 14285), (2510, 11428), (2857, 10040), (5020, 5714)]