80939975

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^2\times {\mathrm{103}}^1$

素因数の和:216

約数の個数: 36

約数和(自身を含む): 109854576

約数和(自身を除く): 28914601

約数列:

[1, 5, 17, 25, 43, 85, 103, 215, 425, 515, 731, 1075, 1751, 1849, 2575, 3655, 4429, 8755, 9245, 18275, 22145, 31433, 43775, 46225, 75293, 110725, 157165, 190447, 376465, 785825, 952235, 1882325, 3237599, 4761175, 16187995, 80939975]

約数ペア:

[(1, 80939975), (5, 16187995), (17, 4761175), (25, 3237599), (43, 1882325), (85, 952235), (103, 785825), (215, 376465), (425, 190447), (515, 157165), (731, 110725), (1075, 75293), (1751, 46225), (1849, 43775), (2575, 31433), (3655, 22145), (4429, 18275), (8755, 9245)]