20722983

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:247

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 9758937

約数列:

[1, 3, 17, 51, 59, 71, 97, 177, 213, 291, 1003, 1207, 1649, 3009, 3621, 4189, 4947, 5723, 6887, 12567, 17169, 20661, 71213, 97291, 117079, 213639, 291873, 351237, 406333, 1218999, 6907661, 20722983]

約数ペア:

[(1, 20722983), (3, 6907661), (17, 1218999), (51, 406333), (59, 351237), (71, 291873), (97, 213639), (177, 117079), (213, 97291), (291, 71213), (1003, 20661), (1207, 17169), (1649, 12567), (3009, 6887), (3621, 5723), (4189, 4947)]