12840475

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:327

約数の個数: 24

約数和(自身を含む): 16740000

約数和(自身を除く): 3899525

約数列:

[1, 5, 25, 29, 89, 145, 199, 445, 725, 995, 2225, 2581, 4975, 5771, 12905, 17711, 28855, 64525, 88555, 144275, 442775, 513619, 2568095, 12840475]

約数ペア:

[(1, 12840475), (5, 2568095), (25, 513619), (29, 442775), (89, 144275), (145, 88555), (199, 64525), (445, 28855), (725, 17711), (995, 12905), (2225, 5771), (2581, 4975)]