127734800

素因数分解:

$2^4\times 5^2\times {\mathrm{197}}^1\times {\mathrm{1621}}^1$

素因数の和:1836

約数の個数: 60

約数和(自身を含む): 308630916

約数和(自身を除く): 180896116

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 197, 200, 394, 400, 788, 985, 1576, 1621, 1970, 3152, 3242, 3940, 4925, 6484, 7880, 8105, 9850, 12968, 15760, 16210, 19700, 25936, 32420, 39400, 40525, 64840, 78800, 81050, 129680, 162100, 319337, 324200, 638674, 648400, 1277348, 1596685, 2554696, 3193370, 5109392, 6386740, 7983425, 12773480, 15966850, 25546960, 31933700, 63867400, 127734800]

約数ペア:

[(1, 127734800), (2, 63867400), (4, 31933700), (5, 25546960), (8, 15966850), (10, 12773480), (16, 7983425), (20, 6386740), (25, 5109392), (40, 3193370), (50, 2554696), (80, 1596685), (100, 1277348), (197, 648400), (200, 638674), (394, 324200), (400, 319337), (788, 162100), (985, 129680), (1576, 81050), (1621, 78800), (1970, 64840), (3152, 40525), (3242, 39400), (3940, 32420), (4925, 25936), (6484, 19700), (7880, 16210), (8105, 15760), (9850, 12968)]