27895820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1\times {\mathrm{199}}^1$

素因数の和:414

約数の個数: 48

約数和(自身を含む): 60614400

約数和(自身を除く): 32718580

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 163, 172, 199, 215, 326, 398, 430, 652, 796, 815, 860, 995, 1630, 1990, 3260, 3980, 7009, 8557, 14018, 17114, 28036, 32437, 34228, 35045, 42785, 64874, 70090, 85570, 129748, 140180, 162185, 171140, 324370, 648740, 1394791, 2789582, 5579164, 6973955, 13947910, 27895820]

約数ペア:

[(1, 27895820), (2, 13947910), (4, 6973955), (5, 5579164), (10, 2789582), (20, 1394791), (43, 648740), (86, 324370), (163, 171140), (172, 162185), (199, 140180), (215, 129748), (326, 85570), (398, 70090), (430, 64874), (652, 42785), (796, 35045), (815, 34228), (860, 32437), (995, 28036), (1630, 17114), (1990, 14018), (3260, 8557), (3980, 7009)]