21306105

素因数分解:

$3^3\times 5^1\times {\mathrm{157823}}^1$

素因数の和:157837

約数の個数: 16

約数和(自身を含む): 37877760

約数和(自身を除く): 16571655

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 157823, 473469, 789115, 1420407, 2367345, 4261221, 7102035, 21306105]

約数ペア:

[(1, 21306105), (3, 7102035), (5, 4261221), (9, 2367345), (15, 1420407), (27, 789115), (45, 473469), (135, 157823)]