21283947

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{229}}^1\times {\mathrm{449}}^1$

素因数の和:707

約数の個数: 24

約数和(自身を含む): 32292000

約数和(自身を除く): 11008053

約数列:

[1, 3, 9, 23, 69, 207, 229, 449, 687, 1347, 2061, 4041, 5267, 10327, 15801, 30981, 47403, 92943, 102821, 308463, 925389, 2364883, 7094649, 21283947]

約数ペア:

[(1, 21283947), (3, 7094649), (9, 2364883), (23, 925389), (69, 308463), (207, 102821), (229, 92943), (449, 47403), (687, 30981), (1347, 15801), (2061, 10327), (4041, 5267)]