21682971

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{193}}^1$

素因数の和:297

約数の個数: 40

約数和(自身を含む): 34741520

約数和(自身を除く): 13058549

約数列:

[1, 3, 9, 19, 27, 57, 73, 81, 171, 193, 219, 513, 579, 657, 1387, 1539, 1737, 1971, 3667, 4161, 5211, 5913, 11001, 12483, 14089, 15633, 33003, 37449, 42267, 99009, 112347, 126801, 267691, 297027, 380403, 803073, 1141209, 2409219, 7227657, 21682971]

約数ペア:

[(1, 21682971), (3, 7227657), (9, 2409219), (19, 1141209), (27, 803073), (57, 380403), (73, 297027), (81, 267691), (171, 126801), (193, 112347), (219, 99009), (513, 42267), (579, 37449), (657, 33003), (1387, 15633), (1539, 14089), (1737, 12483), (1971, 11001), (3667, 5913), (4161, 5211)]