289553620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{203911}}^1$

素因数の和:203991

約数の個数: 24

約数和(自身を含む): 616629888

約数和(自身を除く): 327076268

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 203911, 407822, 815644, 1019555, 2039110, 4078220, 14477681, 28955362, 57910724, 72388405, 144776810, 289553620]

約数ペア:

[(1, 289553620), (2, 144776810), (4, 72388405), (5, 57910724), (10, 28955362), (20, 14477681), (71, 4078220), (142, 2039110), (284, 1019555), (355, 815644), (710, 407822), (1420, 203911)]