81156976

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{199}}^1\times {\mathrm{359}}^1$

素因数の和:637

約数の個数: 40

約数和(自身を含む): 160704000

約数和(自身を除く): 79547024

約数列:

[1, 2, 4, 8, 16, 71, 142, 199, 284, 359, 398, 568, 718, 796, 1136, 1436, 1592, 2872, 3184, 5744, 14129, 25489, 28258, 50978, 56516, 71441, 101956, 113032, 142882, 203912, 226064, 285764, 407824, 571528, 1143056, 5072311, 10144622, 20289244, 40578488, 81156976]

約数ペア:

[(1, 81156976), (2, 40578488), (4, 20289244), (8, 10144622), (16, 5072311), (71, 1143056), (142, 571528), (199, 407824), (284, 285764), (359, 226064), (398, 203912), (568, 142882), (718, 113032), (796, 101956), (1136, 71441), (1436, 56516), (1592, 50978), (2872, 28258), (3184, 25489), (5744, 14129)]