81401516

素因数分解:

$2^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{43391}}^1$

素因数の和:43469

約数の個数: 24

約数和(自身を含む): 165236736

約数和(自身を除く): 83835220

約数列:

[1, 2, 4, 7, 14, 28, 67, 134, 268, 469, 938, 1876, 43391, 86782, 173564, 303737, 607474, 1214948, 2907197, 5814394, 11628788, 20350379, 40700758, 81401516]

約数ペア:

[(1, 81401516), (2, 40700758), (4, 20350379), (7, 11628788), (14, 5814394), (28, 2907197), (67, 1214948), (134, 607474), (268, 303737), (469, 173564), (938, 86782), (1876, 43391)]