25491280

素因数分解:

$2^4\times 5^1\times {\mathrm{318641}}^1$

素因数の和:318654

約数の個数: 20

約数和(自身を含む): 59267412

約数和(自身を除く): 33776132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 318641, 637282, 1274564, 1593205, 2549128, 3186410, 5098256, 6372820, 12745640, 25491280]

約数ペア:

[(1, 25491280), (2, 12745640), (4, 6372820), (5, 5098256), (8, 3186410), (10, 2549128), (16, 1593205), (20, 1274564), (40, 637282), (80, 318641)]