21297441

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{4643}}^1$

素因数の和:4796

約数の個数: 16

約数和(自身を含む): 31207680

約数和(自身を除く): 9910239

約数列:

[1, 3, 11, 33, 139, 417, 1529, 4587, 4643, 13929, 51073, 153219, 645377, 1936131, 7099147, 21297441]

約数ペア:

[(1, 21297441), (3, 7099147), (11, 1936131), (33, 645377), (139, 153219), (417, 51073), (1529, 13929), (4587, 4643)]