3981860

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2237}}^1$

素因数の和:2335

約数の個数: 24

約数和(自身を含む): 8459640

約数和(自身を除く): 4477780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 2237, 4474, 8948, 11185, 22370, 44740, 199093, 398186, 796372, 995465, 1990930, 3981860]

約数ペア:

[(1, 3981860), (2, 1990930), (4, 995465), (5, 796372), (10, 398186), (20, 199093), (89, 44740), (178, 22370), (356, 11185), (445, 8948), (890, 4474), (1780, 2237)]