128539240

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{25303}}^1$

素因数の和:25441

約数の個数: 32

約数和(自身を含む): 291502080

約数和(自身を除く): 162962840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 5080, 25303, 50606, 101212, 126515, 202424, 253030, 506060, 1012120, 3213481, 6426962, 12853924, 16067405, 25707848, 32134810, 64269620, 128539240]

約数ペア:

[(1, 128539240), (2, 64269620), (4, 32134810), (5, 25707848), (8, 16067405), (10, 12853924), (20, 6426962), (40, 3213481), (127, 1012120), (254, 506060), (508, 253030), (635, 202424), (1016, 126515), (1270, 101212), (2540, 50606), (5080, 25303)]