21342340

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1\times {\mathrm{191}}^1$

素因数の和:388

約数の個数: 48

約数和(自身を含む): 46577664

約数和(自身を除く): 25235324

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 151, 185, 191, 302, 370, 382, 604, 740, 755, 764, 955, 1510, 1910, 3020, 3820, 5587, 7067, 11174, 14134, 22348, 27935, 28268, 28841, 35335, 55870, 57682, 70670, 111740, 115364, 141340, 144205, 288410, 576820, 1067117, 2134234, 4268468, 5335585, 10671170, 21342340]

約数ペア:

[(1, 21342340), (2, 10671170), (4, 5335585), (5, 4268468), (10, 2134234), (20, 1067117), (37, 576820), (74, 288410), (148, 144205), (151, 141340), (185, 115364), (191, 111740), (302, 70670), (370, 57682), (382, 55870), (604, 35335), (740, 28841), (755, 28268), (764, 27935), (955, 22348), (1510, 14134), (1910, 11174), (3020, 7067), (3820, 5587)]