16781661

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{15937}}^1$

素因数の和:15962

約数の個数: 20

約数和(自身を含む): 26998972

約数和(自身を除く): 10217311

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 15937, 47811, 143433, 207181, 430299, 621543, 1290897, 1864629, 5593887, 16781661]

約数ペア:

[(1, 16781661), (3, 5593887), (9, 1864629), (13, 1290897), (27, 621543), (39, 430299), (81, 207181), (117, 143433), (351, 47811), (1053, 15937)]