20457766

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1999}}^1$

素因数の和:2068

約数の個数: 32

約数和(自身を含む): 38016000

約数和(自身を除く): 17558234

約数列:

[1, 2, 7, 14, 17, 34, 43, 86, 119, 238, 301, 602, 731, 1462, 1999, 3998, 5117, 10234, 13993, 27986, 33983, 67966, 85957, 171914, 237881, 475762, 601699, 1203398, 1461269, 2922538, 10228883, 20457766]

約数ペア:

[(1, 20457766), (2, 10228883), (7, 2922538), (14, 1461269), (17, 1203398), (34, 601699), (43, 475762), (86, 237881), (119, 171914), (238, 85957), (301, 67966), (602, 33983), (731, 27986), (1462, 13993), (1999, 10234), (3998, 5117)]