18974740

素因数分解:

$2^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{2113}}^1$

素因数の和:2571

約数の個数: 24

約数和(自身を含む): 39954600

約数和(自身を除く): 20979860

約数列:

[1, 2, 4, 5, 10, 20, 449, 898, 1796, 2113, 2245, 4226, 4490, 8452, 8980, 10565, 21130, 42260, 948737, 1897474, 3794948, 4743685, 9487370, 18974740]

約数ペア:

[(1, 18974740), (2, 9487370), (4, 4743685), (5, 3794948), (10, 1897474), (20, 948737), (449, 42260), (898, 21130), (1796, 10565), (2113, 8980), (2245, 8452), (4226, 4490)]