21550959

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{653}}^1$

素因数の和:871

約数の個数: 24

約数和(自身を含む): 32987760

約数和(自身を除く): 11436801

約数列:

[1, 3, 9, 19, 57, 171, 193, 579, 653, 1737, 1959, 3667, 5877, 11001, 12407, 33003, 37221, 111663, 126029, 378087, 1134261, 2394551, 7183653, 21550959]

約数ペア:

[(1, 21550959), (3, 7183653), (9, 2394551), (19, 1134261), (57, 378087), (171, 126029), (193, 111663), (579, 37221), (653, 33003), (1737, 12407), (1959, 11001), (3667, 5877)]