21416857

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{14639}}^1$

素因数の和:14676

約数の個数: 16

約数和(自身を含む): 28108800

約数和(自身を除く): 6691943

約数列:

[1, 7, 11, 19, 77, 133, 209, 1463, 14639, 102473, 161029, 278141, 1127203, 1946987, 3059551, 21416857]

約数ペア:

[(1, 21416857), (7, 3059551), (11, 1946987), (19, 1127203), (77, 278141), (133, 161029), (209, 102473), (1463, 14639)]