28688775

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{22501}}^1$

素因数の和:22531

約数の個数: 24

約数和(自身を含む): 50224464

約数和(自身を除く): 21535689

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 22501, 67503, 112505, 337515, 382517, 562525, 1147551, 1687575, 1912585, 5737755, 9562925, 28688775]

約数ペア:

[(1, 28688775), (3, 9562925), (5, 5737755), (15, 1912585), (17, 1687575), (25, 1147551), (51, 562525), (75, 382517), (85, 337515), (255, 112505), (425, 67503), (1275, 22501)]