81995956

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^2\times {\mathrm{787}}^1$

素因数の和:920

約数の個数: 36

約数和(自身を含む): 166936224

約数和(自身を除く): 84940268

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 787, 854, 1574, 1708, 3148, 3721, 5509, 7442, 11018, 14884, 22036, 26047, 48007, 52094, 96014, 104188, 192028, 336049, 672098, 1344196, 2928427, 5856854, 11713708, 20498989, 40997978, 81995956]

約数ペア:

[(1, 81995956), (2, 40997978), (4, 20498989), (7, 11713708), (14, 5856854), (28, 2928427), (61, 1344196), (122, 672098), (244, 336049), (427, 192028), (787, 104188), (854, 96014), (1574, 52094), (1708, 48007), (3148, 26047), (3721, 22036), (5509, 14884), (7442, 11018)]