21316484

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{5477}}^1$

素因数の和:5627

約数の個数: 24

約数和(自身を含む): 42947520

約数和(自身を除く): 21631036

約数列:

[1, 2, 4, 7, 14, 28, 139, 278, 556, 973, 1946, 3892, 5477, 10954, 21908, 38339, 76678, 153356, 761303, 1522606, 3045212, 5329121, 10658242, 21316484]

約数ペア:

[(1, 21316484), (2, 10658242), (4, 5329121), (7, 3045212), (14, 1522606), (28, 761303), (139, 153356), (278, 76678), (556, 38339), (973, 21908), (1946, 10954), (3892, 5477)]