209901405

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{1999061}}^1$

素因数の和:1999076

約数の個数: 16

約数和(自身を含む): 383819904

約数和(自身を除く): 173918499

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 1999061, 5997183, 9995305, 13993427, 29985915, 41980281, 69967135, 209901405]

約数ペア:

[(1, 209901405), (3, 69967135), (5, 41980281), (7, 29985915), (15, 13993427), (21, 9995305), (35, 5997183), (105, 1999061)]