21988160

素因数分解:

$2^6\times 5^1\times {\mathrm{68713}}^1$

素因数の和:68730

約数の個数: 28

約数和(自身を含む): 52360068

約数和(自身を除く): 30371908

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 68713, 137426, 274852, 343565, 549704, 687130, 1099408, 1374260, 2198816, 2748520, 4397632, 5497040, 10994080, 21988160]

約数ペア:

[(1, 21988160), (2, 10994080), (4, 5497040), (5, 4397632), (8, 2748520), (10, 2198816), (16, 1374260), (20, 1099408), (32, 687130), (40, 549704), (64, 343565), (80, 274852), (160, 137426), (320, 68713)]