28820560

素因数分解:

$2^4\times 5^1\times {\mathrm{360257}}^1$

素因数の和:360270

約数の個数: 20

約数和(自身を含む): 67007988

約数和(自身を除く): 38187428

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 360257, 720514, 1441028, 1801285, 2882056, 3602570, 5764112, 7205140, 14410280, 28820560]

約数ペア:

[(1, 28820560), (2, 14410280), (4, 7205140), (5, 5764112), (8, 3602570), (10, 2882056), (16, 1801285), (20, 1441028), (40, 720514), (80, 360257)]