205291280

素因数分解:

$2^4\times 5^1\times {\mathrm{2566141}}^1$

素因数の和:2566154

約数の個数: 20

約数和(自身を含む): 477302412

約数和(自身を除く): 272011132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2566141, 5132282, 10264564, 12830705, 20529128, 25661410, 41058256, 51322820, 102645640, 205291280]

約数ペア:

[(1, 205291280), (2, 102645640), (4, 51322820), (5, 41058256), (8, 25661410), (10, 20529128), (16, 12830705), (20, 10264564), (40, 5132282), (80, 2566141)]