128464760

素因数分解:

$2^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{21269}}^1$

素因数の和:21431

約数の個数: 32

約数和(自身を含む): 290973600

約数和(自身を除く): 162508840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 151, 302, 604, 755, 1208, 1510, 3020, 6040, 21269, 42538, 85076, 106345, 170152, 212690, 425380, 850760, 3211619, 6423238, 12846476, 16058095, 25692952, 32116190, 64232380, 128464760]

約数ペア:

[(1, 128464760), (2, 64232380), (4, 32116190), (5, 25692952), (8, 16058095), (10, 12846476), (20, 6423238), (40, 3211619), (151, 850760), (302, 425380), (604, 212690), (755, 170152), (1208, 106345), (1510, 85076), (3020, 42538), (6040, 21269)]