128569720

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{25309}}^1$

素因数の和:25447

約数の個数: 32

約数和(自身を含む): 291571200

約数和(自身を除く): 163001480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 5080, 25309, 50618, 101236, 126545, 202472, 253090, 506180, 1012360, 3214243, 6428486, 12856972, 16071215, 25713944, 32142430, 64284860, 128569720]

約数ペア:

[(1, 128569720), (2, 64284860), (4, 32142430), (5, 25713944), (8, 16071215), (10, 12856972), (20, 6428486), (40, 3214243), (127, 1012360), (254, 506180), (508, 253090), (635, 202472), (1016, 126545), (1270, 101236), (2540, 50618), (5080, 25309)]