21305768

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{2917}}^1$

素因数の和:3017

約数の個数: 32

約数和(自身を含む): 44120160

約数和(自身を除く): 22814392

約数列:

[1, 2, 4, 8, 11, 22, 44, 83, 88, 166, 332, 664, 913, 1826, 2917, 3652, 5834, 7304, 11668, 23336, 32087, 64174, 128348, 242111, 256696, 484222, 968444, 1936888, 2663221, 5326442, 10652884, 21305768]

約数ペア:

[(1, 21305768), (2, 10652884), (4, 5326442), (8, 2663221), (11, 1936888), (22, 968444), (44, 484222), (83, 256696), (88, 242111), (166, 128348), (332, 64174), (664, 32087), (913, 23336), (1826, 11668), (2917, 7304), (3652, 5834)]