256962220

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{32363}}^1$

素因数の和:32769

約数の個数: 24

約数和(自身を含む): 540996624

約数和(自身を除く): 284034404

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 32363, 64726, 129452, 161815, 323630, 647260, 12848111, 25696222, 51392444, 64240555, 128481110, 256962220]

約数ペア:

[(1, 256962220), (2, 128481110), (4, 64240555), (5, 51392444), (10, 25696222), (20, 12848111), (397, 647260), (794, 323630), (1588, 161815), (1985, 129452), (3970, 64726), (7940, 32363)]