220181680

素因数分解:

$2^4\times 5^1\times {\mathrm{2752271}}^1$

素因数の和:2752284

約数の個数: 20

約数和(自身を含む): 511922592

約数和(自身を除く): 291740912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2752271, 5504542, 11009084, 13761355, 22018168, 27522710, 44036336, 55045420, 110090840, 220181680]

約数ペア:

[(1, 220181680), (2, 110090840), (4, 55045420), (5, 44036336), (8, 27522710), (10, 22018168), (16, 13761355), (20, 11009084), (40, 5504542), (80, 2752271)]