1969780

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{661}}^1$

素因数の和:819

約数の個数: 24

約数和(自身を含む): 4170600

約数和(自身を除く): 2200820

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 661, 745, 1322, 1490, 2644, 2980, 3305, 6610, 13220, 98489, 196978, 393956, 492445, 984890, 1969780]

約数ペア:

[(1, 1969780), (2, 984890), (4, 492445), (5, 393956), (10, 196978), (20, 98489), (149, 13220), (298, 6610), (596, 3305), (661, 2980), (745, 2644), (1322, 1490)]