20800940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{25367}}^1$

素因数の和:25417

約数の個数: 24

約数和(自身を含む): 44749152

約数和(自身を除く): 23948212

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 25367, 50734, 101468, 126835, 253670, 507340, 1040047, 2080094, 4160188, 5200235, 10400470, 20800940]

約数ペア:

[(1, 20800940), (2, 10400470), (4, 5200235), (5, 4160188), (10, 2080094), (20, 1040047), (41, 507340), (82, 253670), (164, 126835), (205, 101468), (410, 50734), (820, 25367)]