21004788

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{250057}}^1$

素因数の和:250071

約数の個数: 24

約数和(自身を含む): 56012992

約数和(自身を除く): 35008204

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 250057, 500114, 750171, 1000228, 1500342, 1750399, 3000684, 3500798, 5251197, 7001596, 10502394, 21004788]

約数ペア:

[(1, 21004788), (2, 10502394), (3, 7001596), (4, 5251197), (6, 3500798), (7, 3000684), (12, 1750399), (14, 1500342), (21, 1000228), (28, 750171), (42, 500114), (84, 250057)]