21248493

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{23531}}^1$

素因数の和:23584

約数の個数: 16

約数和(自身を含む): 33133056

約数和(自身を除く): 11884563

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 23531, 70593, 164717, 494151, 1011833, 3035499, 7082831, 21248493]

約数ペア:

[(1, 21248493), (3, 7082831), (7, 3035499), (21, 1011833), (43, 494151), (129, 164717), (301, 70593), (903, 23531)]