28404663

素因数分解:

$3^1\times 7^2\times {\mathrm{199}}^1\times {\mathrm{971}}^1$

素因数の和:1187

約数の個数: 24

約数和(自身を含む): 44323200

約数和(自身を除く): 15918537

約数列:

[1, 3, 7, 21, 49, 147, 199, 597, 971, 1393, 2913, 4179, 6797, 9751, 20391, 29253, 47579, 142737, 193229, 579687, 1352603, 4057809, 9468221, 28404663]

約数ペア:

[(1, 28404663), (3, 9468221), (7, 4057809), (21, 1352603), (49, 579687), (147, 193229), (199, 142737), (597, 47579), (971, 29253), (1393, 20391), (2913, 9751), (4179, 6797)]