21164936

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10711}}^1$

素因数の和:10749

約数の個数: 32

約数和(自身を含む): 44990400

約数和(自身を除く): 23825464

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 494, 988, 1976, 10711, 21422, 42844, 85688, 139243, 203509, 278486, 407018, 556972, 814036, 1113944, 1628072, 2645617, 5291234, 10582468, 21164936]

約数ペア:

[(1, 21164936), (2, 10582468), (4, 5291234), (8, 2645617), (13, 1628072), (19, 1113944), (26, 814036), (38, 556972), (52, 407018), (76, 278486), (104, 203509), (152, 139243), (247, 85688), (494, 42844), (988, 21422), (1976, 10711)]