87873820

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{22303}}^1$

素因数の和:22509

約数の個数: 24

約数和(自身を含む): 185480064

約数和(自身を除く): 97606244

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 22303, 44606, 89212, 111515, 223030, 446060, 4393691, 8787382, 17574764, 21968455, 43936910, 87873820]

約数ペア:

[(1, 87873820), (2, 43936910), (4, 21968455), (5, 17574764), (10, 8787382), (20, 4393691), (197, 446060), (394, 223030), (788, 111515), (985, 89212), (1970, 44606), (3940, 22303)]