21378552

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{68521}}^1$

素因数の和:68543

約数の個数: 32

約数和(自身を含む): 57558480

約数和(自身を除く): 36179928

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 68521, 137042, 205563, 274084, 411126, 548168, 822252, 890773, 1644504, 1781546, 2672319, 3563092, 5344638, 7126184, 10689276, 21378552]

約数ペア:

[(1, 21378552), (2, 10689276), (3, 7126184), (4, 5344638), (6, 3563092), (8, 2672319), (12, 1781546), (13, 1644504), (24, 890773), (26, 822252), (39, 548168), (52, 411126), (78, 274084), (104, 205563), (156, 137042), (312, 68521)]