78636680

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{349}}^1$

素因数の和:534

約数の個数: 64

約数和(自身を含む): 182952000

約数和(自身を除く): 104315320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 131, 172, 215, 262, 344, 349, 430, 524, 655, 698, 860, 1048, 1310, 1396, 1720, 1745, 2620, 2792, 3490, 5240, 5633, 6980, 11266, 13960, 15007, 22532, 28165, 30014, 45064, 45719, 56330, 60028, 75035, 91438, 112660, 120056, 150070, 182876, 225320, 228595, 300140, 365752, 457190, 600280, 914380, 1828760, 1965917, 3931834, 7863668, 9829585, 15727336, 19659170, 39318340, 78636680]

約数ペア:

[(1, 78636680), (2, 39318340), (4, 19659170), (5, 15727336), (8, 9829585), (10, 7863668), (20, 3931834), (40, 1965917), (43, 1828760), (86, 914380), (131, 600280), (172, 457190), (215, 365752), (262, 300140), (344, 228595), (349, 225320), (430, 182876), (524, 150070), (655, 120056), (698, 112660), (860, 91438), (1048, 75035), (1310, 60028), (1396, 56330), (1720, 45719), (1745, 45064), (2620, 30014), (2792, 28165), (3490, 22532), (5240, 15007), (5633, 13960), (6980, 11266)]