21461559

素因数分解:

$3^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{1759}}^1$

素因数の和:1859

約数の個数: 24

約数和(自身を含む): 33707520

約数和(自身を除く): 12245961

約数列:

[1, 3, 7, 21, 49, 83, 147, 249, 581, 1743, 1759, 4067, 5277, 12201, 12313, 36939, 86191, 145997, 258573, 437991, 1021979, 3065937, 7153853, 21461559]

約数ペア:

[(1, 21461559), (3, 7153853), (7, 3065937), (21, 1021979), (49, 437991), (83, 258573), (147, 145997), (249, 86191), (581, 36939), (1743, 12313), (1759, 12201), (4067, 5277)]