21341799

素因数分解:

$3^4\times {\mathrm{173}}^1\times {\mathrm{1523}}^1$

素因数の和:1708

約数の個数: 20

約数和(自身を含む): 32086296

約数和(自身を除く): 10744497

約数列:

[1, 3, 9, 27, 81, 173, 519, 1523, 1557, 4569, 4671, 13707, 14013, 41121, 123363, 263479, 790437, 2371311, 7113933, 21341799]

約数ペア:

[(1, 21341799), (3, 7113933), (9, 2371311), (27, 790437), (81, 263479), (173, 123363), (519, 41121), (1523, 14013), (1557, 13707), (4569, 4671)]