21081080

素因数分解:

$2^3\times 5^1\times {\mathrm{719}}^1\times {\mathrm{733}}^1$

素因数の和:1463

約数の個数: 32

約数和(自身を含む): 47563200

約数和(自身を除く): 26482120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 719, 733, 1438, 1466, 2876, 2932, 3595, 3665, 5752, 5864, 7190, 7330, 14380, 14660, 28760, 29320, 527027, 1054054, 2108108, 2635135, 4216216, 5270270, 10540540, 21081080]

約数ペア:

[(1, 21081080), (2, 10540540), (4, 5270270), (5, 4216216), (8, 2635135), (10, 2108108), (20, 1054054), (40, 527027), (719, 29320), (733, 28760), (1438, 14660), (1466, 14380), (2876, 7330), (2932, 7190), (3595, 5864), (3665, 5752)]