12728500

素因数分解:

$2^2\times 5^3\times {\mathrm{25457}}^1$

素因数の和:25476

約数の個数: 24

約数和(自身を含む): 27800136

約数和(自身を除く): 15071636

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 25457, 50914, 101828, 127285, 254570, 509140, 636425, 1272850, 2545700, 3182125, 6364250, 12728500]

約数ペア:

[(1, 12728500), (2, 6364250), (4, 3182125), (5, 2545700), (10, 1272850), (20, 636425), (25, 509140), (50, 254570), (100, 127285), (125, 101828), (250, 50914), (500, 25457)]