21088947

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{13597}}^1$

素因数の和:13658

約数の個数: 16

約数和(自身を含む): 31329792

約数和(自身を除く): 10240845

約数列:

[1, 3, 11, 33, 47, 141, 517, 1551, 13597, 40791, 149567, 448701, 639059, 1917177, 7029649, 21088947]

約数ペア:

[(1, 21088947), (3, 7029649), (11, 1917177), (33, 639059), (47, 448701), (141, 149567), (517, 40791), (1551, 13597)]