21328670

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17627}}^1$

素因数の和:17656

約数の個数: 24

約数和(自身を含む): 42201432

約数和(自身を除く): 20872762

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 17627, 35254, 88135, 176270, 193897, 387794, 969485, 1938970, 2132867, 4265734, 10664335, 21328670]

約数ペア:

[(1, 21328670), (2, 10664335), (5, 4265734), (10, 2132867), (11, 1938970), (22, 969485), (55, 387794), (110, 193897), (121, 176270), (242, 88135), (605, 35254), (1210, 17627)]