21405692

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{69499}}^1$

素因数の和:69521

約数の個数: 24

約数和(自身を含む): 46704000

約数和(自身を除く): 25298308

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 69499, 138998, 277996, 486493, 764489, 972986, 1528978, 1945972, 3057956, 5351423, 10702846, 21405692]

約数ペア:

[(1, 21405692), (2, 10702846), (4, 5351423), (7, 3057956), (11, 1945972), (14, 1528978), (22, 972986), (28, 764489), (44, 486493), (77, 277996), (154, 138998), (308, 69499)]