12800800

素因数分解:

$2^5\times 5^2\times {\mathrm{16001}}^1$

素因数の和:16021

約数の個数: 36

約数和(自身を含む): 31251906

約数和(自身を除く): 18451106

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 16001, 32002, 64004, 80005, 128008, 160010, 256016, 320020, 400025, 512032, 640040, 800050, 1280080, 1600100, 2560160, 3200200, 6400400, 12800800]

約数ペア:

[(1, 12800800), (2, 6400400), (4, 3200200), (5, 2560160), (8, 1600100), (10, 1280080), (16, 800050), (20, 640040), (25, 512032), (32, 400025), (40, 320020), (50, 256016), (80, 160010), (100, 128008), (160, 80005), (200, 64004), (400, 32002), (800, 16001)]