18949780

素因数分解:

$2^2\times 5^1\times {\mathrm{919}}^1\times {\mathrm{1031}}^1$

素因数の和:1959

約数の個数: 24

約数和(自身を含む): 39876480

約数和(自身を除く): 20926700

約数列:

[1, 2, 4, 5, 10, 20, 919, 1031, 1838, 2062, 3676, 4124, 4595, 5155, 9190, 10310, 18380, 20620, 947489, 1894978, 3789956, 4737445, 9474890, 18949780]

約数ペア:

[(1, 18949780), (2, 9474890), (4, 4737445), (5, 3789956), (10, 1894978), (20, 947489), (919, 20620), (1031, 18380), (1838, 10310), (2062, 9190), (3676, 5155), (4124, 4595)]