21611390

素因数分解:

$2^1\times 5^1\times {\mathrm{311}}^1\times {\mathrm{6949}}^1$

素因数の和:7267

約数の個数: 16

約数和(自身を含む): 39031200

約数和(自身を除く): 17419810

約数列:

[1, 2, 5, 10, 311, 622, 1555, 3110, 6949, 13898, 34745, 69490, 2161139, 4322278, 10805695, 21611390]

約数ペア:

[(1, 21611390), (2, 10805695), (5, 4322278), (10, 2161139), (311, 69490), (622, 34745), (1555, 13898), (3110, 6949)]