2180397640

素因数分解:

$2^3\times 5^1\times {\mathrm{2803}}^1\times {\mathrm{19447}}^1$

素因数の和:22261

約数の個数: 32

約数和(自身を含む): 4907897280

約数和(自身を除く): 2727499640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2803, 5606, 11212, 14015, 19447, 22424, 28030, 38894, 56060, 77788, 97235, 112120, 155576, 194470, 388940, 777880, 54509941, 109019882, 218039764, 272549705, 436079528, 545099410, 1090198820, 2180397640]

約数ペア:

[(1, 2180397640), (2, 1090198820), (4, 545099410), (5, 436079528), (8, 272549705), (10, 218039764), (20, 109019882), (40, 54509941), (2803, 777880), (5606, 388940), (11212, 194470), (14015, 155576), (19447, 112120), (22424, 97235), (28030, 77788), (38894, 56060)]