80967580

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^2\times {\mathrm{251}}^1$

素因数の和:514

約数の個数: 36

約数和(自身を含む): 172064088

約数和(自身を除く): 91096508

約数列:

[1, 2, 4, 5, 10, 20, 127, 251, 254, 502, 508, 635, 1004, 1255, 1270, 2510, 2540, 5020, 16129, 31877, 32258, 63754, 64516, 80645, 127508, 159385, 161290, 318770, 322580, 637540, 4048379, 8096758, 16193516, 20241895, 40483790, 80967580]

約数ペア:

[(1, 80967580), (2, 40483790), (4, 20241895), (5, 16193516), (10, 8096758), (20, 4048379), (127, 637540), (251, 322580), (254, 318770), (502, 161290), (508, 159385), (635, 127508), (1004, 80645), (1255, 64516), (1270, 63754), (2510, 32258), (2540, 31877), (5020, 16129)]