18219820

素因数分解:

$2^2\times 5^1\times {\mathrm{857}}^1\times {\mathrm{1063}}^1$

素因数の和:1929

約数の個数: 24

約数和(自身を含む): 38342304

約数和(自身を除く): 20122484

約数列:

[1, 2, 4, 5, 10, 20, 857, 1063, 1714, 2126, 3428, 4252, 4285, 5315, 8570, 10630, 17140, 21260, 910991, 1821982, 3643964, 4554955, 9109910, 18219820]

約数ペア:

[(1, 18219820), (2, 9109910), (4, 4554955), (5, 3643964), (10, 1821982), (20, 910991), (857, 21260), (1063, 17140), (1714, 10630), (2126, 8570), (3428, 5315), (4252, 4285)]