19489491

素因数分解:

$3^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{929}}^1$

素因数の和:985

約数の個数: 40

約数和(自身を含む): 34209120

約数和(自身を除く): 14719629

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 81, 111, 189, 259, 333, 567, 777, 929, 999, 2331, 2787, 2997, 6503, 6993, 8361, 19509, 20979, 25083, 34373, 58527, 75249, 103119, 175581, 240611, 309357, 526743, 721833, 928071, 2165499, 2784213, 6496497, 19489491]

約数ペア:

[(1, 19489491), (3, 6496497), (7, 2784213), (9, 2165499), (21, 928071), (27, 721833), (37, 526743), (63, 309357), (81, 240611), (111, 175581), (189, 103119), (259, 75249), (333, 58527), (567, 34373), (777, 25083), (929, 20979), (999, 19509), (2331, 8361), (2787, 6993), (2997, 6503)]