205121860

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{115237}}^1$

素因数の和:115335

約数の個数: 24

約数和(自身を含む): 435599640

約数和(自身を除く): 230477780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 115237, 230474, 460948, 576185, 1152370, 2304740, 10256093, 20512186, 41024372, 51280465, 102560930, 205121860]

約数ペア:

[(1, 205121860), (2, 102560930), (4, 51280465), (5, 41024372), (10, 20512186), (20, 10256093), (89, 2304740), (178, 1152370), (356, 576185), (445, 460948), (890, 230474), (1780, 115237)]