19747665

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{20897}}^1$

素因数の和:20918

約数の個数: 32

約数和(自身を含む): 40124160

約数和(自身を除く): 20376495

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 20897, 62691, 104485, 146279, 188073, 313455, 438837, 564219, 731395, 940365, 1316511, 2194185, 2821095, 3949533, 6582555, 19747665]

約数ペア:

[(1, 19747665), (3, 6582555), (5, 3949533), (7, 2821095), (9, 2194185), (15, 1316511), (21, 940365), (27, 731395), (35, 564219), (45, 438837), (63, 313455), (105, 188073), (135, 146279), (189, 104485), (315, 62691), (945, 20897)]