19760715

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1987}}^1$

素因数の和:2028

約数の個数: 48

約数和(自身を含む): 39076128

約数和(自身を除く): 19315413

約数列:

[1, 3, 5, 9, 13, 15, 17, 39, 45, 51, 65, 85, 117, 153, 195, 221, 255, 585, 663, 765, 1105, 1987, 1989, 3315, 5961, 9935, 9945, 17883, 25831, 29805, 33779, 77493, 89415, 101337, 129155, 168895, 232479, 304011, 387465, 439127, 506685, 1162395, 1317381, 1520055, 2195635, 3952143, 6586905, 19760715]

約数ペア:

[(1, 19760715), (3, 6586905), (5, 3952143), (9, 2195635), (13, 1520055), (15, 1317381), (17, 1162395), (39, 506685), (45, 439127), (51, 387465), (65, 304011), (85, 232479), (117, 168895), (153, 129155), (195, 101337), (221, 89415), (255, 77493), (585, 33779), (663, 29805), (765, 25831), (1105, 17883), (1987, 9945), (1989, 9935), (3315, 5961)]