291213387

素因数分解:

$3^5\times {\mathrm{71}}^1\times {\mathrm{16879}}^1$

素因数の和:16965

約数の個数: 24

約数和(自身を含む): 442391040

約数和(自身を除く): 151177653

約数列:

[1, 3, 9, 27, 71, 81, 213, 243, 639, 1917, 5751, 16879, 17253, 50637, 151911, 455733, 1198409, 1367199, 3595227, 4101597, 10785681, 32357043, 97071129, 291213387]

約数ペア:

[(1, 291213387), (3, 97071129), (9, 32357043), (27, 10785681), (71, 4101597), (81, 3595227), (213, 1367199), (243, 1198409), (639, 455733), (1917, 151911), (5751, 50637), (16879, 17253)]