28691840

素因数分解:

$2^7\times 5^1\times {\mathrm{127}}^1\times {\mathrm{353}}^1$

素因数の和:499

約数の個数: 64

約数和(自身を含む): 69327360

約数和(自身を除く): 40635520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 320, 353, 508, 635, 640, 706, 1016, 1270, 1412, 1765, 2032, 2540, 2824, 3530, 4064, 5080, 5648, 7060, 8128, 10160, 11296, 14120, 16256, 20320, 22592, 28240, 40640, 44831, 45184, 56480, 81280, 89662, 112960, 179324, 224155, 225920, 358648, 448310, 717296, 896620, 1434592, 1793240, 2869184, 3586480, 5738368, 7172960, 14345920, 28691840]

約数ペア:

[(1, 28691840), (2, 14345920), (4, 7172960), (5, 5738368), (8, 3586480), (10, 2869184), (16, 1793240), (20, 1434592), (32, 896620), (40, 717296), (64, 448310), (80, 358648), (127, 225920), (128, 224155), (160, 179324), (254, 112960), (320, 89662), (353, 81280), (508, 56480), (635, 45184), (640, 44831), (706, 40640), (1016, 28240), (1270, 22592), (1412, 20320), (1765, 16256), (2032, 14120), (2540, 11296), (2824, 10160), (3530, 8128), (4064, 7060), (5080, 5648)]