21340827

素因数分解:

$3^4\times {\mathrm{487}}^1\times {\mathrm{541}}^1$

素因数の和:1040

約数の個数: 20

約数和(自身を含む): 32004016

約数和(自身を除く): 10663189

約数列:

[1, 3, 9, 27, 81, 487, 541, 1461, 1623, 4383, 4869, 13149, 14607, 39447, 43821, 263467, 790401, 2371203, 7113609, 21340827]

約数ペア:

[(1, 21340827), (3, 7113609), (9, 2371203), (27, 790401), (81, 263467), (487, 43821), (541, 39447), (1461, 14607), (1623, 13149), (4383, 4869)]