261568

素因数分解:

$2^6\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:140

約数の個数: 28

約数和(自身を含む): 535432

約数和(自身を除く): 273864

約数列:

[1, 2, 4, 8, 16, 32, 61, 64, 67, 122, 134, 244, 268, 488, 536, 976, 1072, 1952, 2144, 3904, 4087, 4288, 8174, 16348, 32696, 65392, 130784, 261568]

約数ペア:

[(1, 261568), (2, 130784), (4, 65392), (8, 32696), (16, 16348), (32, 8174), (61, 4288), (64, 4087), (67, 3904), (122, 2144), (134, 1952), (244, 1072), (268, 976), (488, 536)]