21247331

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1109}}^1$

素因数の和:1163

約数の個数: 24

約数和(自身を含む): 27332640

約数和(自身を除く): 6085309

約数列:

[1, 7, 17, 23, 49, 119, 161, 391, 833, 1109, 1127, 2737, 7763, 18853, 19159, 25507, 54341, 131971, 178549, 433619, 923797, 1249843, 3035333, 21247331]

約数ペア:

[(1, 21247331), (7, 3035333), (17, 1249843), (23, 923797), (49, 433619), (119, 178549), (161, 131971), (391, 54341), (833, 25507), (1109, 19159), (1127, 18853), (2737, 7763)]