18687160

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3361}}^1$

素因数の和:3511

約数の個数: 32

約数和(自身を含む): 42361200

約数和(自身を除く): 23674040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 3361, 5560, 6722, 13444, 16805, 26888, 33610, 67220, 134440, 467179, 934358, 1868716, 2335895, 3737432, 4671790, 9343580, 18687160]

約数ペア:

[(1, 18687160), (2, 9343580), (4, 4671790), (5, 3737432), (8, 2335895), (10, 1868716), (20, 934358), (40, 467179), (139, 134440), (278, 67220), (556, 33610), (695, 26888), (1112, 16805), (1390, 13444), (2780, 6722), (3361, 5560)]