21091994

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{12451}}^1$

素因数の和:12482

約数の個数: 24

約数和(自身を含む): 39746784

約数和(自身を除く): 18654790

約数列:

[1, 2, 7, 11, 14, 22, 77, 121, 154, 242, 847, 1694, 12451, 24902, 87157, 136961, 174314, 273922, 958727, 1506571, 1917454, 3013142, 10545997, 21091994]

約数ペア:

[(1, 21091994), (2, 10545997), (7, 3013142), (11, 1917454), (14, 1506571), (22, 958727), (77, 273922), (121, 174314), (154, 136961), (242, 87157), (847, 24902), (1694, 12451)]