21037131

素因数分解:

$3^3\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{241}}^1$

素因数の和:364

約数の個数: 32

約数和(自身を含む): 32408640

約数和(自身を除く): 11371509

約数列:

[1, 3, 9, 27, 53, 61, 159, 183, 241, 477, 549, 723, 1431, 1647, 2169, 3233, 6507, 9699, 12773, 14701, 29097, 38319, 44103, 87291, 114957, 132309, 344871, 396927, 779153, 2337459, 7012377, 21037131]

約数ペア:

[(1, 21037131), (3, 7012377), (9, 2337459), (27, 779153), (53, 396927), (61, 344871), (159, 132309), (183, 114957), (241, 87291), (477, 44103), (549, 38319), (723, 29097), (1431, 14701), (1647, 12773), (2169, 9699), (3233, 6507)]