18965804

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{467}}^1$

素因数の和:566

約数の個数: 48

約数和(自身を含む): 39626496

約数和(自身を除く): 20660692

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 71, 142, 143, 284, 286, 467, 572, 781, 923, 934, 1562, 1846, 1868, 3124, 3692, 5137, 6071, 10153, 10274, 12142, 20306, 20548, 24284, 33157, 40612, 66314, 66781, 132628, 133562, 267124, 364727, 431041, 729454, 862082, 1458908, 1724164, 4741451, 9482902, 18965804]

約数ペア:

[(1, 18965804), (2, 9482902), (4, 4741451), (11, 1724164), (13, 1458908), (22, 862082), (26, 729454), (44, 431041), (52, 364727), (71, 267124), (142, 133562), (143, 132628), (284, 66781), (286, 66314), (467, 40612), (572, 33157), (781, 24284), (923, 20548), (934, 20306), (1562, 12142), (1846, 10274), (1868, 10153), (3124, 6071), (3692, 5137)]