21000411

素因数分解:

$3^3\times {\mathrm{83}}^1\times {\mathrm{9371}}^1$

素因数の和:9463

約数の個数: 16

約数和(自身を含む): 31489920

約数和(自身を除く): 10489509

約数列:

[1, 3, 9, 27, 83, 249, 747, 2241, 9371, 28113, 84339, 253017, 777793, 2333379, 7000137, 21000411]

約数ペア:

[(1, 21000411), (3, 7000137), (9, 2333379), (27, 777793), (83, 253017), (249, 84339), (747, 28113), (2241, 9371)]