18997140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{479}}^1\times {\mathrm{661}}^1$

素因数の和:1152

約数の個数: 48

約数和(自身を含む): 53383680

約数和(自身を除く): 34386540

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 479, 661, 958, 1322, 1437, 1916, 1983, 2395, 2644, 2874, 3305, 3966, 4790, 5748, 6610, 7185, 7932, 9580, 9915, 13220, 14370, 19830, 28740, 39660, 316619, 633238, 949857, 1266476, 1583095, 1899714, 3166190, 3799428, 4749285, 6332380, 9498570, 18997140]

約数ペア:

[(1, 18997140), (2, 9498570), (3, 6332380), (4, 4749285), (5, 3799428), (6, 3166190), (10, 1899714), (12, 1583095), (15, 1266476), (20, 949857), (30, 633238), (60, 316619), (479, 39660), (661, 28740), (958, 19830), (1322, 14370), (1437, 13220), (1916, 9915), (1983, 9580), (2395, 7932), (2644, 7185), (2874, 6610), (3305, 5748), (3966, 4790)]