18858416

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{193}}^1\times {\mathrm{197}}^1$

素因数の和:429

約数の個数: 40

約数和(自身を含む): 38104704

約数和(自身を除く): 19246288

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 193, 197, 248, 386, 394, 496, 772, 788, 1544, 1576, 3088, 3152, 5983, 6107, 11966, 12214, 23932, 24428, 38021, 47864, 48856, 76042, 95728, 97712, 152084, 304168, 608336, 1178651, 2357302, 4714604, 9429208, 18858416]

約数ペア:

[(1, 18858416), (2, 9429208), (4, 4714604), (8, 2357302), (16, 1178651), (31, 608336), (62, 304168), (124, 152084), (193, 97712), (197, 95728), (248, 76042), (386, 48856), (394, 47864), (496, 38021), (772, 24428), (788, 23932), (1544, 12214), (1576, 11966), (3088, 6107), (3152, 5983)]