20579420

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21893}}^1$

素因数の和:21949

約数の個数: 24

約数和(自身を含む): 44138304

約数和(自身を除く): 23558884

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 21893, 43786, 87572, 109465, 218930, 437860, 1028971, 2057942, 4115884, 5144855, 10289710, 20579420]

約数ペア:

[(1, 20579420), (2, 10289710), (4, 5144855), (5, 4115884), (10, 2057942), (20, 1028971), (47, 437860), (94, 218930), (188, 109465), (235, 87572), (470, 43786), (940, 21893)]