18903824

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{311}}^1$

素因数の和:479

約数の個数: 40

約数和(自身を含む): 38301120

約数和(自身を除く): 19397296

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 131, 232, 262, 311, 464, 524, 622, 1048, 1244, 2096, 2488, 3799, 4976, 7598, 9019, 15196, 18038, 30392, 36076, 40741, 60784, 72152, 81482, 144304, 162964, 325928, 651856, 1181489, 2362978, 4725956, 9451912, 18903824]

約数ペア:

[(1, 18903824), (2, 9451912), (4, 4725956), (8, 2362978), (16, 1181489), (29, 651856), (58, 325928), (116, 162964), (131, 144304), (232, 81482), (262, 72152), (311, 60784), (464, 40741), (524, 36076), (622, 30392), (1048, 18038), (1244, 15196), (2096, 9019), (2488, 7598), (3799, 4976)]