18281980

素因数分解:

$2^2\times 5^1\times {\mathrm{487}}^1\times {\mathrm{1877}}^1$

素因数の和:2373

約数の個数: 24

約数和(自身を含む): 38491488

約数和(自身を除く): 20209508

約数列:

[1, 2, 4, 5, 10, 20, 487, 974, 1877, 1948, 2435, 3754, 4870, 7508, 9385, 9740, 18770, 37540, 914099, 1828198, 3656396, 4570495, 9140990, 18281980]

約数ペア:

[(1, 18281980), (2, 9140990), (4, 4570495), (5, 3656396), (10, 1828198), (20, 914099), (487, 37540), (974, 18770), (1877, 9740), (1948, 9385), (2435, 7508), (3754, 4870)]