18398860

素因数分解:

$2^2\times 5^1\times {\mathrm{487}}^1\times {\mathrm{1889}}^1$

素因数の和:2385

約数の個数: 24

約数和(自身を含む): 38737440

約数和(自身を除く): 20338580

約数列:

[1, 2, 4, 5, 10, 20, 487, 974, 1889, 1948, 2435, 3778, 4870, 7556, 9445, 9740, 18890, 37780, 919943, 1839886, 3679772, 4599715, 9199430, 18398860]

約数ペア:

[(1, 18398860), (2, 9199430), (4, 4599715), (5, 3679772), (10, 1839886), (20, 919943), (487, 37780), (974, 18890), (1889, 9740), (1948, 9445), (2435, 7556), (3778, 4870)]