28206820

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{7879}}^1$

素因数の和:8067

約数の個数: 24

約数和(自身を含む): 59572800

約数和(自身を除く): 31365980

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 7879, 15758, 31516, 39395, 78790, 157580, 1410341, 2820682, 5641364, 7051705, 14103410, 28206820]

約数ペア:

[(1, 28206820), (2, 14103410), (4, 7051705), (5, 5641364), (10, 2820682), (20, 1410341), (179, 157580), (358, 78790), (716, 39395), (895, 31516), (1790, 15758), (3580, 7879)]