338749640

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{66683}}^1$

素因数の和:66821

約数の個数: 32

約数和(自身を含む): 768199680

約数和(自身を除く): 429450040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 5080, 66683, 133366, 266732, 333415, 533464, 666830, 1333660, 2667320, 8468741, 16937482, 33874964, 42343705, 67749928, 84687410, 169374820, 338749640]

約数ペア:

[(1, 338749640), (2, 169374820), (4, 84687410), (5, 67749928), (8, 42343705), (10, 33874964), (20, 16937482), (40, 8468741), (127, 2667320), (254, 1333660), (508, 666830), (635, 533464), (1016, 333415), (1270, 266732), (2540, 133366), (5080, 66683)]