788891780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{439}}^1\times {\mathrm{4729}}^1$

素因数の和:5196

約数の個数: 48

約数和(自身を含む): 1748208000

約数和(自身を除く): 959316220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 439, 878, 1756, 2195, 4390, 4729, 8341, 8780, 9458, 16682, 18916, 23645, 33364, 41705, 47290, 83410, 89851, 94580, 166820, 179702, 359404, 449255, 898510, 1797020, 2076031, 4152062, 8304124, 10380155, 20760310, 39444589, 41520620, 78889178, 157778356, 197222945, 394445890, 788891780]

約数ペア:

[(1, 788891780), (2, 394445890), (4, 197222945), (5, 157778356), (10, 78889178), (19, 41520620), (20, 39444589), (38, 20760310), (76, 10380155), (95, 8304124), (190, 4152062), (380, 2076031), (439, 1797020), (878, 898510), (1756, 449255), (2195, 359404), (4390, 179702), (4729, 166820), (8341, 94580), (8780, 89851), (9458, 83410), (16682, 47290), (18916, 41705), (23645, 33364)]