200905820

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{25303}}^1$

素因数の和:25709

約数の個数: 24

約数和(自身を含む): 422981664

約数和(自身を除く): 222075844

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 25303, 50606, 101212, 126515, 253030, 506060, 10045291, 20090582, 40181164, 50226455, 100452910, 200905820]

約数ペア:

[(1, 200905820), (2, 100452910), (4, 50226455), (5, 40181164), (10, 20090582), (20, 10045291), (397, 506060), (794, 253030), (1588, 126515), (1985, 101212), (3970, 50606), (7940, 25303)]