28012900

素因数分解:

$2^2\times 5^2\times {\mathrm{280129}}^1$

素因数の和:280143

約数の個数: 18

約数和(自身を含む): 60788210

約数和(自身を除く): 32775310

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 280129, 560258, 1120516, 1400645, 2801290, 5602580, 7003225, 14006450, 28012900]

約数ペア:

[(1, 28012900), (2, 14006450), (4, 7003225), (5, 5602580), (10, 2801290), (20, 1400645), (25, 1120516), (50, 560258), (100, 280129)]