21009858

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{293}}^1$

素因数の和:371

約数の個数: 64

約数和(自身を含む): 48263040

約数和(自身を除く): 27253182

約数列:

[1, 2, 3, 6, 17, 19, 34, 37, 38, 51, 57, 74, 102, 111, 114, 222, 293, 323, 586, 629, 646, 703, 879, 969, 1258, 1406, 1758, 1887, 1938, 2109, 3774, 4218, 4981, 5567, 9962, 10841, 11134, 11951, 14943, 16701, 21682, 23902, 29886, 32523, 33402, 35853, 65046, 71706, 94639, 184297, 189278, 205979, 283917, 368594, 411958, 552891, 567834, 617937, 1105782, 1235874, 3501643, 7003286, 10504929, 21009858]

約数ペア:

[(1, 21009858), (2, 10504929), (3, 7003286), (6, 3501643), (17, 1235874), (19, 1105782), (34, 617937), (37, 567834), (38, 552891), (51, 411958), (57, 368594), (74, 283917), (102, 205979), (111, 189278), (114, 184297), (222, 94639), (293, 71706), (323, 65046), (586, 35853), (629, 33402), (646, 32523), (703, 29886), (879, 23902), (969, 21682), (1258, 16701), (1406, 14943), (1758, 11951), (1887, 11134), (1938, 10841), (2109, 9962), (3774, 5567), (4218, 4981)]