21138648

素因数分解:

$2^3\times 3^1\times {\mathrm{677}}^1\times {\mathrm{1301}}^1$

素因数の和:1987

約数の個数: 32

約数和(自身を含む): 52965360

約数和(自身を除く): 31826712

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 677, 1301, 1354, 2031, 2602, 2708, 3903, 4062, 5204, 5416, 7806, 8124, 10408, 15612, 16248, 31224, 880777, 1761554, 2642331, 3523108, 5284662, 7046216, 10569324, 21138648]

約数ペア:

[(1, 21138648), (2, 10569324), (3, 7046216), (4, 5284662), (6, 3523108), (8, 2642331), (12, 1761554), (24, 880777), (677, 31224), (1301, 16248), (1354, 15612), (2031, 10408), (2602, 8124), (2708, 7806), (3903, 5416), (4062, 5204)]