18765488

素因数分解:

$2^4\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1279}}^1$

素因数の和:1425

約数の個数: 40

約数和(自身を含む): 41902080

約数和(自身を除く): 23136592

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 131, 262, 524, 917, 1048, 1279, 1834, 2096, 2558, 3668, 5116, 7336, 8953, 10232, 14672, 17906, 20464, 35812, 71624, 143248, 167549, 335098, 670196, 1172843, 1340392, 2345686, 2680784, 4691372, 9382744, 18765488]

約数ペア:

[(1, 18765488), (2, 9382744), (4, 4691372), (7, 2680784), (8, 2345686), (14, 1340392), (16, 1172843), (28, 670196), (56, 335098), (112, 167549), (131, 143248), (262, 71624), (524, 35812), (917, 20464), (1048, 17906), (1279, 14672), (1834, 10232), (2096, 8953), (2558, 7336), (3668, 5116)]