21276021

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{1777}}^1$

素因数の和:2100

約数の個数: 16

約数和(自身を含む): 30666944

約数和(自身を除く): 9390923

約数列:

[1, 3, 13, 39, 307, 921, 1777, 3991, 5331, 11973, 23101, 69303, 545539, 1636617, 7092007, 21276021]

約数ペア:

[(1, 21276021), (3, 7092007), (13, 1636617), (39, 545539), (307, 69303), (921, 23101), (1777, 11973), (3991, 5331)]