20123488048

素因数分解:

$2^4\times {\mathrm{1951}}^1\times {\mathrm{644653}}^1$

素因数の和:646612

約数の個数: 20

約数和(自身を含む): 39009302848

約数和(自身を除く): 18885814800

約数列:

[1, 2, 4, 8, 16, 1951, 3902, 7804, 15608, 31216, 644653, 1289306, 2578612, 5157224, 10314448, 1257718003, 2515436006, 5030872012, 10061744024, 20123488048]

約数ペア:

[(1, 20123488048), (2, 10061744024), (4, 5030872012), (8, 2515436006), (16, 1257718003), (1951, 10314448), (3902, 5157224), (7804, 2578612), (15608, 1289306), (31216, 644653)]