18914180

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{11971}}^1$

素因数の和:12059

約数の個数: 24

約数和(自身を含む): 40225920

約数和(自身を除く): 21311740

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 11971, 23942, 47884, 59855, 119710, 239420, 945709, 1891418, 3782836, 4728545, 9457090, 18914180]

約数ペア:

[(1, 18914180), (2, 9457090), (4, 4728545), (5, 3782836), (10, 1891418), (20, 945709), (79, 239420), (158, 119710), (316, 59855), (395, 47884), (790, 23942), (1580, 11971)]