8390420

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{947}}^1$

素因数の和:1399

約数の個数: 24

約数和(自身を含む): 17678304

約数和(自身を除く): 9287884

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 947, 1772, 1894, 2215, 3788, 4430, 4735, 8860, 9470, 18940, 419521, 839042, 1678084, 2097605, 4195210, 8390420]

約数ペア:

[(1, 8390420), (2, 4195210), (4, 2097605), (5, 1678084), (10, 839042), (20, 419521), (443, 18940), (886, 9470), (947, 8860), (1772, 4735), (1894, 4430), (2215, 3788)]