20722977

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{479}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 35942400

約数和(自身を除く): 15219423

約数列:

[1, 3, 9, 11, 19, 23, 33, 57, 69, 99, 171, 207, 209, 253, 437, 479, 627, 759, 1311, 1437, 1881, 2277, 3933, 4311, 4807, 5269, 9101, 11017, 14421, 15807, 27303, 33051, 43263, 47421, 81909, 99153, 100111, 121187, 209323, 300333, 363561, 627969, 900999, 1090683, 1883907, 2302553, 6907659, 20722977]

約数ペア:

[(1, 20722977), (3, 6907659), (9, 2302553), (11, 1883907), (19, 1090683), (23, 900999), (33, 627969), (57, 363561), (69, 300333), (99, 209323), (171, 121187), (207, 100111), (209, 99153), (253, 81909), (437, 47421), (479, 43263), (627, 33051), (759, 27303), (1311, 15807), (1437, 14421), (1881, 11017), (2277, 9101), (3933, 5269), (4311, 4807)]