19875500

素因数分解:

$2^2\times 5^3\times {\mathrm{127}}^1\times {\mathrm{313}}^1$

素因数の和:459

約数の個数: 48

約数和(自身を含む): 43889664

約数和(自身を除く): 24014164

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 127, 250, 254, 313, 500, 508, 626, 635, 1252, 1270, 1565, 2540, 3130, 3175, 6260, 6350, 7825, 12700, 15650, 15875, 31300, 31750, 39125, 39751, 63500, 78250, 79502, 156500, 159004, 198755, 397510, 795020, 993775, 1987550, 3975100, 4968875, 9937750, 19875500]

約数ペア:

[(1, 19875500), (2, 9937750), (4, 4968875), (5, 3975100), (10, 1987550), (20, 993775), (25, 795020), (50, 397510), (100, 198755), (125, 159004), (127, 156500), (250, 79502), (254, 78250), (313, 63500), (500, 39751), (508, 39125), (626, 31750), (635, 31300), (1252, 15875), (1270, 15650), (1565, 12700), (2540, 7825), (3130, 6350), (3175, 6260)]