20085489

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:483

約数の個数: 40

約数和(自身を含む): 32679680

約数和(自身を除く): 12594191

約数列:

[1, 3, 9, 19, 27, 31, 57, 81, 93, 171, 279, 421, 513, 589, 837, 1263, 1539, 1767, 2511, 3789, 5301, 7999, 11367, 13051, 15903, 23997, 34101, 39153, 47709, 71991, 117459, 215973, 247969, 352377, 647919, 743907, 1057131, 2231721, 6695163, 20085489]

約数ペア:

[(1, 20085489), (3, 6695163), (9, 2231721), (19, 1057131), (27, 743907), (31, 647919), (57, 352377), (81, 247969), (93, 215973), (171, 117459), (279, 71991), (421, 47709), (513, 39153), (589, 34101), (837, 23997), (1263, 15903), (1539, 13051), (1767, 11367), (2511, 7999), (3789, 5301)]