20808585

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{9437}}^1$

素因数の和:9462

約数の個数: 36

約数和(自身を含む): 41961348

約数和(自身を除く): 21152763

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 441, 735, 2205, 9437, 28311, 47185, 66059, 84933, 141555, 198177, 330295, 424665, 462413, 594531, 990885, 1387239, 2312065, 2972655, 4161717, 6936195, 20808585]

約数ペア:

[(1, 20808585), (3, 6936195), (5, 4161717), (7, 2972655), (9, 2312065), (15, 1387239), (21, 990885), (35, 594531), (45, 462413), (49, 424665), (63, 330295), (105, 198177), (147, 141555), (245, 84933), (315, 66059), (441, 47185), (735, 28311), (2205, 9437)]