19916199

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{12941}}^1$

素因数の和:12972

約数の個数: 20

約数和(自身を含む): 31319640

約数和(自身を除く): 11403441

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 12941, 38823, 116469, 245879, 349407, 737637, 1048221, 2212911, 6638733, 19916199]

約数ペア:

[(1, 19916199), (3, 6638733), (9, 2212911), (19, 1048221), (27, 737637), (57, 349407), (81, 245879), (171, 116469), (513, 38823), (1539, 12941)]