25418780

素因数分解:

$2^2\times 5^1\times {\mathrm{809}}^1\times {\mathrm{1571}}^1$

素因数の和:2389

約数の個数: 24

約数和(自身を含む): 53479440

約数和(自身を除く): 28060660

約数列:

[1, 2, 4, 5, 10, 20, 809, 1571, 1618, 3142, 3236, 4045, 6284, 7855, 8090, 15710, 16180, 31420, 1270939, 2541878, 5083756, 6354695, 12709390, 25418780]

約数ペア:

[(1, 25418780), (2, 12709390), (4, 6354695), (5, 5083756), (10, 2541878), (20, 1270939), (809, 31420), (1571, 16180), (1618, 15710), (3142, 8090), (3236, 7855), (4045, 6284)]