78206680

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{1109}}^1$

素因数の和:1204

約数の個数: 64

約数和(自身を含む): 184615200

約数和(自身を除く): 106408520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 43, 82, 86, 164, 172, 205, 215, 328, 344, 410, 430, 820, 860, 1109, 1640, 1720, 1763, 2218, 3526, 4436, 5545, 7052, 8815, 8872, 11090, 14104, 17630, 22180, 35260, 44360, 45469, 47687, 70520, 90938, 95374, 181876, 190748, 227345, 238435, 363752, 381496, 454690, 476870, 909380, 953740, 1818760, 1907480, 1955167, 3910334, 7820668, 9775835, 15641336, 19551670, 39103340, 78206680]

約数ペア:

[(1, 78206680), (2, 39103340), (4, 19551670), (5, 15641336), (8, 9775835), (10, 7820668), (20, 3910334), (40, 1955167), (41, 1907480), (43, 1818760), (82, 953740), (86, 909380), (164, 476870), (172, 454690), (205, 381496), (215, 363752), (328, 238435), (344, 227345), (410, 190748), (430, 181876), (820, 95374), (860, 90938), (1109, 70520), (1640, 47687), (1720, 45469), (1763, 44360), (2218, 35260), (3526, 22180), (4436, 17630), (5545, 14104), (7052, 11090), (8815, 8872)]