21406805

素因数分解:

$5^1\times 7^1\times {\mathrm{463}}^1\times {\mathrm{1321}}^1$

素因数の和:1796

約数の個数: 16

約数和(自身を含む): 29443584

約数和(自身を除く): 8036779

約数列:

[1, 5, 7, 35, 463, 1321, 2315, 3241, 6605, 9247, 16205, 46235, 611623, 3058115, 4281361, 21406805]

約数ペア:

[(1, 21406805), (5, 4281361), (7, 3058115), (35, 611623), (463, 46235), (1321, 16205), (2315, 9247), (3241, 6605)]