21384081

素因数分解:

$3^4\times {\mathrm{227}}^1\times {\mathrm{1163}}^1$

素因数の和:1402

約数の個数: 20

約数和(自身を含む): 32112432

約数和(自身を除く): 10728351

約数列:

[1, 3, 9, 27, 81, 227, 681, 1163, 2043, 3489, 6129, 10467, 18387, 31401, 94203, 264001, 792003, 2376009, 7128027, 21384081]

約数ペア:

[(1, 21384081), (3, 7128027), (9, 2376009), (27, 792003), (81, 264001), (227, 94203), (681, 31401), (1163, 18387), (2043, 10467), (3489, 6129)]