20164240

素因数分解:

$2^4\times 5^1\times {\mathrm{269}}^1\times {\mathrm{937}}^1$

素因数の和:1219

約数の個数: 40

約数和(自身を含む): 47106360

約数和(自身を除く): 26942120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 269, 538, 937, 1076, 1345, 1874, 2152, 2690, 3748, 4304, 4685, 5380, 7496, 9370, 10760, 14992, 18740, 21520, 37480, 74960, 252053, 504106, 1008212, 1260265, 2016424, 2520530, 4032848, 5041060, 10082120, 20164240]

約数ペア:

[(1, 20164240), (2, 10082120), (4, 5041060), (5, 4032848), (8, 2520530), (10, 2016424), (16, 1260265), (20, 1008212), (40, 504106), (80, 252053), (269, 74960), (538, 37480), (937, 21520), (1076, 18740), (1345, 14992), (1874, 10760), (2152, 9370), (2690, 7496), (3748, 5380), (4304, 4685)]