20395112

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{557}}^1$

素因数の和:785

約数の個数: 32

約数和(自身を含む): 40176000

約数和(自身を除く): 19780888

約数列:

[1, 2, 4, 8, 23, 46, 92, 184, 199, 398, 557, 796, 1114, 1592, 2228, 4456, 4577, 9154, 12811, 18308, 25622, 36616, 51244, 102488, 110843, 221686, 443372, 886744, 2549389, 5098778, 10197556, 20395112]

約数ペア:

[(1, 20395112), (2, 10197556), (4, 5098778), (8, 2549389), (23, 886744), (46, 443372), (92, 221686), (184, 110843), (199, 102488), (398, 51244), (557, 36616), (796, 25622), (1114, 18308), (1592, 12811), (2228, 9154), (4456, 4577)]