20512640

素因数分解:

$2^7\times 5^1\times {\mathrm{32051}}^1$

素因数の和:32070

約数の個数: 32

約数和(自身を含む): 49039560

約数和(自身を除く): 28526920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 32051, 64102, 128204, 160255, 256408, 320510, 512816, 641020, 1025632, 1282040, 2051264, 2564080, 4102528, 5128160, 10256320, 20512640]

約数ペア:

[(1, 20512640), (2, 10256320), (4, 5128160), (5, 4102528), (8, 2564080), (10, 2051264), (16, 1282040), (20, 1025632), (32, 641020), (40, 512816), (64, 320510), (80, 256408), (128, 160255), (160, 128204), (320, 64102), (640, 32051)]