20432380

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14389}}^1$

素因数の和:14469

約数の個数: 24

約数和(自身を含む): 43515360

約数和(自身を除く): 23082980

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 14389, 28778, 57556, 71945, 143890, 287780, 1021619, 2043238, 4086476, 5108095, 10216190, 20432380]

約数ペア:

[(1, 20432380), (2, 10216190), (4, 5108095), (5, 4086476), (10, 2043238), (20, 1021619), (71, 287780), (142, 143890), (284, 71945), (355, 57556), (710, 28778), (1420, 14389)]