28821680

素因数分解:

$2^4\times 5^1\times {\mathrm{360271}}^1$

素因数の和:360284

約数の個数: 20

約数和(自身を含む): 67010592

約数和(自身を除く): 38188912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 360271, 720542, 1441084, 1801355, 2882168, 3602710, 5764336, 7205420, 14410840, 28821680]

約数ペア:

[(1, 28821680), (2, 14410840), (4, 7205420), (5, 5764336), (8, 3602710), (10, 2882168), (16, 1801355), (20, 1441084), (40, 720542), (80, 360271)]