21012271

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{6869}}^1$

素因数の和:6918

約数の個数: 16

約数和(自身を含む): 26380800

約数和(自身を除く): 5368529

約数列:

[1, 7, 19, 23, 133, 161, 437, 3059, 6869, 48083, 130511, 157987, 913577, 1105909, 3001753, 21012271]

約数ペア:

[(1, 21012271), (7, 3001753), (19, 1105909), (23, 913577), (133, 157987), (161, 130511), (437, 48083), (3059, 6869)]