18401980

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{8933}}^1$

素因数の和:9045

約数の個数: 24

約数和(自身を含む): 39023712

約数和(自身を除く): 20621732

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 8933, 17866, 35732, 44665, 89330, 178660, 920099, 1840198, 3680396, 4600495, 9200990, 18401980]

約数ペア:

[(1, 18401980), (2, 9200990), (4, 4600495), (5, 3680396), (10, 1840198), (20, 920099), (103, 178660), (206, 89330), (412, 44665), (515, 35732), (1030, 17866), (2060, 8933)]