20681584

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{16787}}^1$

素因数の和:16813

約数の個数: 40

約数和(自身を含む): 49961088

約数和(自身を除く): 29279504

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 112, 154, 176, 308, 616, 1232, 16787, 33574, 67148, 117509, 134296, 184657, 235018, 268592, 369314, 470036, 738628, 940072, 1292599, 1477256, 1880144, 2585198, 2954512, 5170396, 10340792, 20681584]

約数ペア:

[(1, 20681584), (2, 10340792), (4, 5170396), (7, 2954512), (8, 2585198), (11, 1880144), (14, 1477256), (16, 1292599), (22, 940072), (28, 738628), (44, 470036), (56, 369314), (77, 268592), (88, 235018), (112, 184657), (154, 134296), (176, 117509), (308, 67148), (616, 33574), (1232, 16787)]