127900000

素因数分解:

$2^5\times 5^5\times {\mathrm{1279}}^1$

素因数の和:1314

約数の個数: 72

約数和(自身を含む): 314979840

約数和(自身を除く): 187079840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1250, 1279, 2000, 2500, 2558, 3125, 4000, 5000, 5116, 6250, 6395, 10000, 10232, 12500, 12790, 20000, 20464, 25000, 25580, 31975, 40928, 50000, 51160, 63950, 100000, 102320, 127900, 159875, 204640, 255800, 319750, 511600, 639500, 799375, 1023200, 1279000, 1598750, 2558000, 3197500, 3996875, 5116000, 6395000, 7993750, 12790000, 15987500, 25580000, 31975000, 63950000, 127900000]

約数ペア:

[(1, 127900000), (2, 63950000), (4, 31975000), (5, 25580000), (8, 15987500), (10, 12790000), (16, 7993750), (20, 6395000), (25, 5116000), (32, 3996875), (40, 3197500), (50, 2558000), (80, 1598750), (100, 1279000), (125, 1023200), (160, 799375), (200, 639500), (250, 511600), (400, 319750), (500, 255800), (625, 204640), (800, 159875), (1000, 127900), (1250, 102320), (1279, 100000), (2000, 63950), (2500, 51160), (2558, 50000), (3125, 40928), (4000, 31975), (5000, 25580), (5116, 25000), (6250, 20464), (6395, 20000), (10000, 12790), (10232, 12500)]