20139280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{35963}}^1$

素因数の和:35983

約数の個数: 40

約数和(自身を含む): 53514432

約数和(自身を除く): 33375152

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 35963, 71926, 143852, 179815, 251741, 287704, 359630, 503482, 575408, 719260, 1006964, 1258705, 1438520, 2013928, 2517410, 2877040, 4027856, 5034820, 10069640, 20139280]

約数ペア:

[(1, 20139280), (2, 10069640), (4, 5034820), (5, 4027856), (7, 2877040), (8, 2517410), (10, 2013928), (14, 1438520), (16, 1258705), (20, 1006964), (28, 719260), (35, 575408), (40, 503482), (56, 359630), (70, 287704), (80, 251741), (112, 179815), (140, 143852), (280, 71926), (560, 35963)]