20361520

素因数分解:

$2^4\times 5^1\times {\mathrm{254519}}^1$

素因数の和:254532

約数の個数: 20

約数和(自身を含む): 47340720

約数和(自身を除く): 26979200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 254519, 509038, 1018076, 1272595, 2036152, 2545190, 4072304, 5090380, 10180760, 20361520]

約数ペア:

[(1, 20361520), (2, 10180760), (4, 5090380), (5, 4072304), (8, 2545190), (10, 2036152), (16, 1272595), (20, 1018076), (40, 509038), (80, 254519)]