201307405

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 266112000

約数和(自身を除く): 64804595

約数列:

[1, 5, 13, 65, 79, 197, 199, 395, 985, 995, 1027, 2561, 2587, 5135, 12805, 12935, 15563, 15721, 39203, 77815, 78605, 196015, 202319, 204373, 509639, 1011595, 1021865, 2548195, 3097037, 15485185, 40261481, 201307405]

約数ペア:

[(1, 201307405), (5, 40261481), (13, 15485185), (65, 3097037), (79, 2548195), (197, 1021865), (199, 1011595), (395, 509639), (985, 204373), (995, 202319), (1027, 196015), (2561, 78605), (2587, 77815), (5135, 39203), (12805, 15721), (12935, 15563)]