81979646

素因数分解:

$2^1\times 7^2\times {\mathrm{421}}^1\times {\mathrm{1987}}^1$

素因数の和:2424

約数の個数: 24

約数和(自身を含む): 143458056

約数和(自身を除く): 61478410

約数列:

[1, 2, 7, 14, 49, 98, 421, 842, 1987, 2947, 3974, 5894, 13909, 20629, 27818, 41258, 97363, 194726, 836527, 1673054, 5855689, 11711378, 40989823, 81979646]

約数ペア:

[(1, 81979646), (2, 40989823), (7, 11711378), (14, 5855689), (49, 1673054), (98, 836527), (421, 194726), (842, 97363), (1987, 41258), (2947, 27818), (3974, 20629), (5894, 13909)]