21887745

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{1217}}^1$

素因数の和:1345

約数の個数: 32

約数和(自身を含む): 38586240

約数和(自身を除く): 16698495

約数列:

[1, 3, 5, 11, 15, 33, 55, 109, 165, 327, 545, 1199, 1217, 1635, 3597, 3651, 5995, 6085, 13387, 17985, 18255, 40161, 66935, 132653, 200805, 397959, 663265, 1459183, 1989795, 4377549, 7295915, 21887745]

約数ペア:

[(1, 21887745), (3, 7295915), (5, 4377549), (11, 1989795), (15, 1459183), (33, 663265), (55, 397959), (109, 200805), (165, 132653), (327, 66935), (545, 40161), (1199, 18255), (1217, 17985), (1635, 13387), (3597, 6085), (3651, 5995)]