212948905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1\times {\mathrm{199}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 281030400

約数和(自身を除く): 68081495

約数列:

[1, 5, 13, 65, 101, 163, 199, 505, 815, 995, 1313, 2119, 2587, 6565, 10595, 12935, 16463, 20099, 32437, 82315, 100495, 162185, 214019, 261287, 421681, 1070095, 1306435, 2108405, 3276137, 16380685, 42589781, 212948905]

約数ペア:

[(1, 212948905), (5, 42589781), (13, 16380685), (65, 3276137), (101, 2108405), (163, 1306435), (199, 1070095), (505, 421681), (815, 261287), (995, 214019), (1313, 162185), (2119, 100495), (2587, 82315), (6565, 32437), (10595, 20099), (12935, 16463)]