21909730

素因数分解:

$2^1\times 5^1\times {\mathrm{1123}}^1\times {\mathrm{1951}}^1$

素因数の和:3081

約数の個数: 16

約数和(自身を含む): 39492864

約数和(自身を除く): 17583134

約数列:

[1, 2, 5, 10, 1123, 1951, 2246, 3902, 5615, 9755, 11230, 19510, 2190973, 4381946, 10954865, 21909730]

約数ペア:

[(1, 21909730), (2, 10954865), (5, 4381946), (10, 2190973), (1123, 19510), (1951, 11230), (2246, 9755), (3902, 5615)]