21085407081

素因数分解:

$3^3\times {\mathrm{479}}^1\times {\mathrm{1630357}}^1$

素因数の和:1630845

約数の個数: 16

約数和(自身を含む): 31302873600

約数和(自身を除く): 10217466519

約数列:

[1, 3, 9, 27, 479, 1437, 4311, 12933, 1630357, 4891071, 14673213, 44019639, 780941003, 2342823009, 7028469027, 21085407081]

約数ペア:

[(1, 21085407081), (3, 7028469027), (9, 2342823009), (27, 780941003), (479, 44019639), (1437, 14673213), (4311, 4891071), (12933, 1630357)]