21648972

素因数分解:

$2^2\times 3^1\times {\mathrm{139}}^1\times {\mathrm{12979}}^1$

素因数の和:13125

約数の個数: 24

約数和(自身を含む): 50881600

約数和(自身を除く): 29232628

約数列:

[1, 2, 3, 4, 6, 12, 139, 278, 417, 556, 834, 1668, 12979, 25958, 38937, 51916, 77874, 155748, 1804081, 3608162, 5412243, 7216324, 10824486, 21648972]

約数ペア:

[(1, 21648972), (2, 10824486), (3, 7216324), (4, 5412243), (6, 3608162), (12, 1804081), (139, 155748), (278, 77874), (417, 51916), (556, 38937), (834, 25958), (1668, 12979)]