16980978

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{404309}}^1$

素因数の和:404321

約数の個数: 16

約数和(自身を含む): 38813760

約数和(自身を除く): 21832782

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 404309, 808618, 1212927, 2425854, 2830163, 5660326, 8490489, 16980978]

約数ペア:

[(1, 16980978), (2, 8490489), (3, 5660326), (6, 2830163), (7, 2425854), (14, 1212927), (21, 808618), (42, 404309)]