261017120

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{197}}^1$

素因数の和:252

約数の個数: 216

約数和(自身を含む): 780697764

約数和(自身を除く): 519680644

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 160, 169, 182, 196, 197, 208, 224, 245, 260, 280, 338, 364, 392, 394, 416, 455, 490, 520, 560, 637, 676, 728, 784, 788, 845, 910, 980, 985, 1040, 1120, 1183, 1274, 1352, 1379, 1456, 1568, 1576, 1690, 1820, 1960, 1970, 2080, 2366, 2548, 2561, 2704, 2758, 2912, 3152, 3185, 3380, 3640, 3920, 3940, 4732, 5096, 5122, 5408, 5516, 5915, 6304, 6370, 6760, 6895, 7280, 7840, 7880, 8281, 9464, 9653, 10192, 10244, 11032, 11830, 12740, 12805, 13520, 13790, 14560, 15760, 16562, 17927, 18928, 19306, 20384, 20488, 22064, 23660, 25480, 25610, 27040, 27580, 31520, 33124, 33293, 35854, 37856, 38612, 40976, 41405, 44128, 47320, 48265, 50960, 51220, 55160, 66248, 66586, 71708, 77224, 81952, 82810, 89635, 94640, 96530, 101920, 102440, 110320, 125489, 132496, 133172, 143416, 154448, 165620, 166465, 179270, 189280, 193060, 204880, 220640, 233051, 250978, 264992, 266344, 286832, 308896, 331240, 332930, 358540, 386120, 409760, 466102, 501956, 532688, 573664, 627445, 662480, 665860, 717080, 772240, 932204, 1003912, 1065376, 1165255, 1254890, 1324960, 1331720, 1434160, 1544480, 1631357, 1864408, 2007824, 2330510, 2509780, 2663440, 2868320, 3262714, 3728816, 4015648, 4661020, 5019560, 5326880, 6525428, 7457632, 8156785, 9322040, 10039120, 13050856, 16313570, 18644080, 20078240, 26101712, 32627140, 37288160, 52203424, 65254280, 130508560, 261017120]

約数ペア:

[(1, 261017120), (2, 130508560), (4, 65254280), (5, 52203424), (7, 37288160), (8, 32627140), (10, 26101712), (13, 20078240), (14, 18644080), (16, 16313570), (20, 13050856), (26, 10039120), (28, 9322040), (32, 8156785), (35, 7457632), (40, 6525428), (49, 5326880), (52, 5019560), (56, 4661020), (65, 4015648), (70, 3728816), (80, 3262714), (91, 2868320), (98, 2663440), (104, 2509780), (112, 2330510), (130, 2007824), (140, 1864408), (160, 1631357), (169, 1544480), (182, 1434160), (196, 1331720), (197, 1324960), (208, 1254890), (224, 1165255), (245, 1065376), (260, 1003912), (280, 932204), (338, 772240), (364, 717080), (392, 665860), (394, 662480), (416, 627445), (455, 573664), (490, 532688), (520, 501956), (560, 466102), (637, 409760), (676, 386120), (728, 358540), (784, 332930), (788, 331240), (845, 308896), (910, 286832), (980, 266344), (985, 264992), (1040, 250978), (1120, 233051), (1183, 220640), (1274, 204880), (1352, 193060), (1379, 189280), (1456, 179270), (1568, 166465), (1576, 165620), (1690, 154448), (1820, 143416), (1960, 133172), (1970, 132496), (2080, 125489), (2366, 110320), (2548, 102440), (2561, 101920), (2704, 96530), (2758, 94640), (2912, 89635), (3152, 82810), (3185, 81952), (3380, 77224), (3640, 71708), (3920, 66586), (3940, 66248), (4732, 55160), (5096, 51220), (5122, 50960), (5408, 48265), (5516, 47320), (5915, 44128), (6304, 41405), (6370, 40976), (6760, 38612), (6895, 37856), (7280, 35854), (7840, 33293), (7880, 33124), (8281, 31520), (9464, 27580), (9653, 27040), (10192, 25610), (10244, 25480), (11032, 23660), (11830, 22064), (12740, 20488), (12805, 20384), (13520, 19306), (13790, 18928), (14560, 17927), (15760, 16562)]