20447073

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{479}}^1$

素因数の和:539

約数の個数: 40

約数和(自身を含む): 33454080

約数和(自身を除く): 13007007

約数列:

[1, 3, 9, 17, 27, 31, 51, 81, 93, 153, 279, 459, 479, 527, 837, 1377, 1437, 1581, 2511, 4311, 4743, 8143, 12933, 14229, 14849, 24429, 38799, 42687, 44547, 73287, 133641, 219861, 252433, 400923, 659583, 757299, 1202769, 2271897, 6815691, 20447073]

約数ペア:

[(1, 20447073), (3, 6815691), (9, 2271897), (17, 1202769), (27, 757299), (31, 659583), (51, 400923), (81, 252433), (93, 219861), (153, 133641), (279, 73287), (459, 44547), (479, 42687), (527, 38799), (837, 24429), (1377, 14849), (1437, 14229), (1581, 12933), (2511, 8143), (4311, 4743)]