18443781

素因数分解:

$3^4\times {\mathrm{109}}^1\times {\mathrm{2089}}^1$

素因数の和:2210

約数の個数: 20

約数和(自身を含む): 27817900

約数和(自身を除く): 9374119

約数列:

[1, 3, 9, 27, 81, 109, 327, 981, 2089, 2943, 6267, 8829, 18801, 56403, 169209, 227701, 683103, 2049309, 6147927, 18443781]

約数ペア:

[(1, 18443781), (3, 6147927), (9, 2049309), (27, 683103), (81, 227701), (109, 169209), (327, 56403), (981, 18801), (2089, 8829), (2943, 6267)]