261661120

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{587}}^1$

素因数の和:810

約数の個数: 112

約数和(自身を含む): 716889600

約数和(自身を除く): 455228480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 199, 224, 280, 320, 398, 448, 560, 587, 796, 995, 1120, 1174, 1393, 1592, 1990, 2240, 2348, 2786, 2935, 3184, 3980, 4109, 4696, 5572, 5870, 6368, 6965, 7960, 8218, 9392, 11144, 11740, 12736, 13930, 15920, 16436, 18784, 20545, 22288, 23480, 27860, 31840, 32872, 37568, 41090, 44576, 46960, 55720, 63680, 65744, 82180, 89152, 93920, 111440, 116813, 131488, 164360, 187840, 222880, 233626, 262976, 328720, 445760, 467252, 584065, 657440, 817691, 934504, 1168130, 1314880, 1635382, 1869008, 2336260, 3270764, 3738016, 4088455, 4672520, 6541528, 7476032, 8176910, 9345040, 13083056, 16353820, 18690080, 26166112, 32707640, 37380160, 52332224, 65415280, 130830560, 261661120]

約数ペア:

[(1, 261661120), (2, 130830560), (4, 65415280), (5, 52332224), (7, 37380160), (8, 32707640), (10, 26166112), (14, 18690080), (16, 16353820), (20, 13083056), (28, 9345040), (32, 8176910), (35, 7476032), (40, 6541528), (56, 4672520), (64, 4088455), (70, 3738016), (80, 3270764), (112, 2336260), (140, 1869008), (160, 1635382), (199, 1314880), (224, 1168130), (280, 934504), (320, 817691), (398, 657440), (448, 584065), (560, 467252), (587, 445760), (796, 328720), (995, 262976), (1120, 233626), (1174, 222880), (1393, 187840), (1592, 164360), (1990, 131488), (2240, 116813), (2348, 111440), (2786, 93920), (2935, 89152), (3184, 82180), (3980, 65744), (4109, 63680), (4696, 55720), (5572, 46960), (5870, 44576), (6368, 41090), (6965, 37568), (7960, 32872), (8218, 31840), (9392, 27860), (11144, 23480), (11740, 22288), (12736, 20545), (13930, 18784), (15920, 16436)]