81216868

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{281}}^1\times {\mathrm{3803}}^1$

素因数の和:4107

約数の個数: 24

約数和(自身を含む): 150181920

約数和(自身を除く): 68965052

約数列:

[1, 2, 4, 19, 38, 76, 281, 562, 1124, 3803, 5339, 7606, 10678, 15212, 21356, 72257, 144514, 289028, 1068643, 2137286, 4274572, 20304217, 40608434, 81216868]

約数ペア:

[(1, 81216868), (2, 40608434), (4, 20304217), (19, 4274572), (38, 2137286), (76, 1068643), (281, 289028), (562, 144514), (1124, 72257), (3803, 21356), (5339, 15212), (7606, 10678)]