66897680

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{19447}}^1$

素因数の和:19503

約数の個数: 40

約数和(自身を含む): 159162432

約数和(自身を除く): 92264752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 19447, 38894, 77788, 97235, 155576, 194470, 311152, 388940, 777880, 836221, 1555760, 1672442, 3344884, 4181105, 6689768, 8362210, 13379536, 16724420, 33448840, 66897680]

約数ペア:

[(1, 66897680), (2, 33448840), (4, 16724420), (5, 13379536), (8, 8362210), (10, 6689768), (16, 4181105), (20, 3344884), (40, 1672442), (43, 1555760), (80, 836221), (86, 777880), (172, 388940), (215, 311152), (344, 194470), (430, 155576), (688, 97235), (860, 77788), (1720, 38894), (3440, 19447)]