19939180

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{6691}}^1$

素因数の和:6849

約数の個数: 24

約数和(自身を含む): 42159600

約数和(自身を除く): 22220420

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 6691, 13382, 26764, 33455, 66910, 133820, 996959, 1993918, 3987836, 4984795, 9969590, 19939180]

約数ペア:

[(1, 19939180), (2, 9969590), (4, 4984795), (5, 3987836), (10, 1993918), (20, 996959), (149, 133820), (298, 66910), (596, 33455), (745, 26764), (1490, 13382), (2980, 6691)]