78885040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{751}}^1$

素因数の和:878

約数の個数: 80

約数和(自身を含む): 199737216

約数和(自身を除く): 120852176

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 101, 104, 130, 202, 208, 260, 404, 505, 520, 751, 808, 1010, 1040, 1313, 1502, 1616, 2020, 2626, 3004, 3755, 4040, 5252, 6008, 6565, 7510, 8080, 9763, 10504, 12016, 13130, 15020, 19526, 21008, 26260, 30040, 39052, 48815, 52520, 60080, 75851, 78104, 97630, 105040, 151702, 156208, 195260, 303404, 379255, 390520, 606808, 758510, 781040, 986063, 1213616, 1517020, 1972126, 3034040, 3944252, 4930315, 6068080, 7888504, 9860630, 15777008, 19721260, 39442520, 78885040]

約数ペア:

[(1, 78885040), (2, 39442520), (4, 19721260), (5, 15777008), (8, 9860630), (10, 7888504), (13, 6068080), (16, 4930315), (20, 3944252), (26, 3034040), (40, 1972126), (52, 1517020), (65, 1213616), (80, 986063), (101, 781040), (104, 758510), (130, 606808), (202, 390520), (208, 379255), (260, 303404), (404, 195260), (505, 156208), (520, 151702), (751, 105040), (808, 97630), (1010, 78104), (1040, 75851), (1313, 60080), (1502, 52520), (1616, 48815), (2020, 39052), (2626, 30040), (3004, 26260), (3755, 21008), (4040, 19526), (5252, 15020), (6008, 13130), (6565, 12016), (7510, 10504), (8080, 9763)]