18806780

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{6311}}^1$

素因数の和:6469

約数の個数: 24

約数和(自身を含む): 39765600

約数和(自身を除く): 20958820

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 6311, 12622, 25244, 31555, 63110, 126220, 940339, 1880678, 3761356, 4701695, 9403390, 18806780]

約数ペア:

[(1, 18806780), (2, 9403390), (4, 4701695), (5, 3761356), (10, 1880678), (20, 940339), (149, 126220), (298, 63110), (596, 31555), (745, 25244), (1490, 12622), (2980, 6311)]