81520222

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{43781}}^1$

素因数の和:43816

約数の個数: 24

約数和(自身を含む): 149734440

約数和(自身を除く): 68214218

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 931, 1862, 43781, 87562, 306467, 612934, 831839, 1663678, 2145269, 4290538, 5822873, 11645746, 40760111, 81520222]

約数ペア:

[(1, 81520222), (2, 40760111), (7, 11645746), (14, 5822873), (19, 4290538), (38, 2145269), (49, 1663678), (98, 831839), (133, 612934), (266, 306467), (931, 87562), (1862, 43781)]