21197709

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1759}}^1$

素因数の和:1881

約数の個数: 24

約数和(自身を含む): 33313280

約数和(自身を除く): 12115571

約数列:

[1, 3, 9, 13, 39, 103, 117, 309, 927, 1339, 1759, 4017, 5277, 12051, 15831, 22867, 68601, 181177, 205803, 543531, 1630593, 2355301, 7065903, 21197709]

約数ペア:

[(1, 21197709), (3, 7065903), (9, 2355301), (13, 1630593), (39, 543531), (103, 205803), (117, 181177), (309, 68601), (927, 22867), (1339, 15831), (1759, 12051), (4017, 5277)]