21039288

素因数分解:

$2^3\times 3^1\times {\mathrm{71}}^1\times {\mathrm{12347}}^1$

素因数の和:12427

約数の個数: 32

約数和(自身を含む): 53343360

約数和(自身を除く): 32304072

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 71, 142, 213, 284, 426, 568, 852, 1704, 12347, 24694, 37041, 49388, 74082, 98776, 148164, 296328, 876637, 1753274, 2629911, 3506548, 5259822, 7013096, 10519644, 21039288]

約数ペア:

[(1, 21039288), (2, 10519644), (3, 7013096), (4, 5259822), (6, 3506548), (8, 2629911), (12, 1753274), (24, 876637), (71, 296328), (142, 148164), (213, 98776), (284, 74082), (426, 49388), (568, 37041), (852, 24694), (1704, 12347)]