20392757

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{263}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 27371520

約数和(自身を除く): 6978763

約数列:

[1, 7, 11, 19, 53, 77, 133, 209, 263, 371, 583, 1007, 1463, 1841, 2893, 4081, 4997, 7049, 11077, 13939, 20251, 34979, 54967, 77539, 97573, 153329, 264841, 384769, 1073303, 1853887, 2913251, 20392757]

約数ペア:

[(1, 20392757), (7, 2913251), (11, 1853887), (19, 1073303), (53, 384769), (77, 264841), (133, 153329), (209, 97573), (263, 77539), (371, 54967), (583, 34979), (1007, 20251), (1463, 13939), (1841, 11077), (2893, 7049), (4081, 4997)]