28408540

素因数分解:

$2^2\times 5^1\times {\mathrm{839}}^1\times {\mathrm{1693}}^1$

素因数の和:2541

約数の個数: 24

約数和(自身を含む): 59764320

約数和(自身を除く): 31355780

約数列:

[1, 2, 4, 5, 10, 20, 839, 1678, 1693, 3356, 3386, 4195, 6772, 8390, 8465, 16780, 16930, 33860, 1420427, 2840854, 5681708, 7102135, 14204270, 28408540]

約数ペア:

[(1, 28408540), (2, 14204270), (4, 7102135), (5, 5681708), (10, 2840854), (20, 1420427), (839, 33860), (1678, 16930), (1693, 16780), (3356, 8465), (3386, 8390), (4195, 6772)]