128658440

素因数分解:

$2^3\times 5^1\times {\mathrm{463}}^1\times {\mathrm{6947}}^1$

素因数の和:7421

約数の個数: 32

約数和(自身を含む): 290148480

約数和(自身を除く): 161490040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 463, 926, 1852, 2315, 3704, 4630, 6947, 9260, 13894, 18520, 27788, 34735, 55576, 69470, 138940, 277880, 3216461, 6432922, 12865844, 16082305, 25731688, 32164610, 64329220, 128658440]

約数ペア:

[(1, 128658440), (2, 64329220), (4, 32164610), (5, 25731688), (8, 16082305), (10, 12865844), (20, 6432922), (40, 3216461), (463, 277880), (926, 138940), (1852, 69470), (2315, 55576), (3704, 34735), (4630, 27788), (6947, 18520), (9260, 13894)]