19921748

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{911}}^1$

素因数の和:1004

約数の個数: 48

約数和(自身を含む): 44126208

約数和(自身を除く): 24204460

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 71, 77, 142, 154, 284, 308, 497, 781, 911, 994, 1562, 1822, 1988, 3124, 3644, 5467, 6377, 10021, 10934, 12754, 20042, 21868, 25508, 40084, 64681, 70147, 129362, 140294, 258724, 280588, 452767, 711491, 905534, 1422982, 1811068, 2845964, 4980437, 9960874, 19921748]

約数ペア:

[(1, 19921748), (2, 9960874), (4, 4980437), (7, 2845964), (11, 1811068), (14, 1422982), (22, 905534), (28, 711491), (44, 452767), (71, 280588), (77, 258724), (142, 140294), (154, 129362), (284, 70147), (308, 64681), (497, 40084), (781, 25508), (911, 21868), (994, 20042), (1562, 12754), (1822, 10934), (1988, 10021), (3124, 6377), (3644, 5467)]