204555440

素因数分解:

$2^4\times 5^1\times {\mathrm{2556943}}^1$

素因数の和:2556956

約数の個数: 20

約数和(自身を含む): 475591584

約数和(自身を除く): 271036144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2556943, 5113886, 10227772, 12784715, 20455544, 25569430, 40911088, 51138860, 102277720, 204555440]

約数ペア:

[(1, 204555440), (2, 102277720), (4, 51138860), (5, 40911088), (8, 25569430), (10, 20455544), (16, 12784715), (20, 10227772), (40, 5113886), (80, 2556943)]