18719405

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{1049}}^1$

素因数の和:1180

約数の個数: 16

約数和(自身を含む): 23284800

約数和(自身を除く): 4565395

約数列:

[1, 5, 43, 83, 215, 415, 1049, 3569, 5245, 17845, 45107, 87067, 225535, 435335, 3743881, 18719405]

約数ペア:

[(1, 18719405), (5, 3743881), (43, 435335), (83, 225535), (215, 87067), (415, 45107), (1049, 17845), (3569, 5245)]