78031520

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{269}}^1$

素因数の和:335

約数の個数: 144

約数和(自身を含む): 221061960

約数和(自身を除く): 143030440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 37, 40, 49, 56, 70, 74, 80, 98, 112, 140, 148, 160, 185, 196, 224, 245, 259, 269, 280, 296, 370, 392, 490, 518, 538, 560, 592, 740, 784, 980, 1036, 1076, 1120, 1184, 1295, 1345, 1480, 1568, 1813, 1883, 1960, 2072, 2152, 2590, 2690, 2960, 3626, 3766, 3920, 4144, 4304, 5180, 5380, 5920, 7252, 7532, 7840, 8288, 8608, 9065, 9415, 9953, 10360, 10760, 13181, 14504, 15064, 18130, 18830, 19906, 20720, 21520, 26362, 29008, 30128, 36260, 37660, 39812, 41440, 43040, 49765, 52724, 58016, 60256, 65905, 69671, 72520, 75320, 79624, 99530, 105448, 131810, 139342, 145040, 150640, 159248, 199060, 210896, 263620, 278684, 290080, 301280, 318496, 348355, 398120, 421792, 487697, 527240, 557368, 696710, 796240, 975394, 1054480, 1114736, 1393420, 1592480, 1950788, 2108960, 2229472, 2438485, 2786840, 3901576, 4876970, 5573680, 7803152, 9753940, 11147360, 15606304, 19507880, 39015760, 78031520]

約数ペア:

[(1, 78031520), (2, 39015760), (4, 19507880), (5, 15606304), (7, 11147360), (8, 9753940), (10, 7803152), (14, 5573680), (16, 4876970), (20, 3901576), (28, 2786840), (32, 2438485), (35, 2229472), (37, 2108960), (40, 1950788), (49, 1592480), (56, 1393420), (70, 1114736), (74, 1054480), (80, 975394), (98, 796240), (112, 696710), (140, 557368), (148, 527240), (160, 487697), (185, 421792), (196, 398120), (224, 348355), (245, 318496), (259, 301280), (269, 290080), (280, 278684), (296, 263620), (370, 210896), (392, 199060), (490, 159248), (518, 150640), (538, 145040), (560, 139342), (592, 131810), (740, 105448), (784, 99530), (980, 79624), (1036, 75320), (1076, 72520), (1120, 69671), (1184, 65905), (1295, 60256), (1345, 58016), (1480, 52724), (1568, 49765), (1813, 43040), (1883, 41440), (1960, 39812), (2072, 37660), (2152, 36260), (2590, 30128), (2690, 29008), (2960, 26362), (3626, 21520), (3766, 20720), (3920, 19906), (4144, 18830), (4304, 18130), (5180, 15064), (5380, 14504), (5920, 13181), (7252, 10760), (7532, 10360), (7840, 9953), (8288, 9415), (8608, 9065)]