208538781680

素因数分解:

$2^4\times 5^1\times {\mathrm{2606734771}}^1$

素因数の和:2606734784

約数の個数: 20

約数和(自身を含む): 484852667592

約数和(自身を除く): 276313885912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2606734771, 5213469542, 10426939084, 13033673855, 20853878168, 26067347710, 41707756336, 52134695420, 104269390840, 208538781680]

約数ペア:

[(1, 208538781680), (2, 104269390840), (4, 52134695420), (5, 41707756336), (8, 26067347710), (10, 20853878168), (16, 13033673855), (20, 10426939084), (40, 5213469542), (80, 2606734771)]