81386680

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{433}}^1$

素因数の和:608

約数の個数: 64

約数和(自身を含む): 189987840

約数和(自身を除く): 108601160

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 127, 148, 185, 254, 296, 370, 433, 508, 635, 740, 866, 1016, 1270, 1480, 1732, 2165, 2540, 3464, 4330, 4699, 5080, 8660, 9398, 16021, 17320, 18796, 23495, 32042, 37592, 46990, 54991, 64084, 80105, 93980, 109982, 128168, 160210, 187960, 219964, 274955, 320420, 439928, 549910, 640840, 1099820, 2034667, 2199640, 4069334, 8138668, 10173335, 16277336, 20346670, 40693340, 81386680]

約数ペア:

[(1, 81386680), (2, 40693340), (4, 20346670), (5, 16277336), (8, 10173335), (10, 8138668), (20, 4069334), (37, 2199640), (40, 2034667), (74, 1099820), (127, 640840), (148, 549910), (185, 439928), (254, 320420), (296, 274955), (370, 219964), (433, 187960), (508, 160210), (635, 128168), (740, 109982), (866, 93980), (1016, 80105), (1270, 64084), (1480, 54991), (1732, 46990), (2165, 37592), (2540, 32042), (3464, 23495), (4330, 18796), (4699, 17320), (5080, 16021), (8660, 9398)]