261913680

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{331}}^1$

素因数の和:514

約数の個数: 240

約数和(自身を含む): 1014708864

約数和(自身を除く): 752795184

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 157, 168, 180, 210, 240, 252, 280, 314, 315, 331, 336, 360, 420, 471, 504, 560, 628, 630, 662, 720, 785, 840, 942, 993, 1008, 1099, 1256, 1260, 1324, 1413, 1570, 1655, 1680, 1884, 1986, 2198, 2317, 2355, 2512, 2520, 2648, 2826, 2979, 3140, 3297, 3310, 3768, 3972, 4396, 4634, 4710, 4965, 5040, 5296, 5495, 5652, 5958, 6280, 6594, 6620, 6951, 7065, 7536, 7944, 8792, 9268, 9420, 9891, 9930, 10990, 11304, 11585, 11916, 12560, 13188, 13240, 13902, 14130, 14895, 15888, 16485, 17584, 18536, 18840, 19782, 19860, 20853, 21980, 22608, 23170, 23832, 26376, 26480, 27804, 28260, 29790, 32970, 34755, 37072, 37680, 39564, 39720, 41706, 43960, 46340, 47664, 49455, 51967, 52752, 55608, 56520, 59580, 65940, 69510, 79128, 79440, 83412, 87920, 92680, 98910, 103934, 104265, 111216, 113040, 119160, 131880, 139020, 155901, 158256, 166824, 185360, 197820, 207868, 208530, 238320, 259835, 263760, 278040, 311802, 333648, 363769, 395640, 415736, 417060, 467703, 519670, 556080, 623604, 727538, 779505, 791280, 831472, 834120, 935406, 1039340, 1091307, 1247208, 1455076, 1559010, 1668240, 1818845, 1870812, 2078680, 2182614, 2338515, 2494416, 2910152, 3118020, 3273921, 3637690, 3741624, 4157360, 4365228, 4677030, 5456535, 5820304, 6236040, 6547842, 7275380, 7483248, 8730456, 9354060, 10913070, 12472080, 13095684, 14550760, 16369605, 17460912, 18708120, 21826140, 26191368, 29101520, 32739210, 37416240, 43652280, 52382736, 65478420, 87304560, 130956840, 261913680]

約数ペア:

[(1, 261913680), (2, 130956840), (3, 87304560), (4, 65478420), (5, 52382736), (6, 43652280), (7, 37416240), (8, 32739210), (9, 29101520), (10, 26191368), (12, 21826140), (14, 18708120), (15, 17460912), (16, 16369605), (18, 14550760), (20, 13095684), (21, 12472080), (24, 10913070), (28, 9354060), (30, 8730456), (35, 7483248), (36, 7275380), (40, 6547842), (42, 6236040), (45, 5820304), (48, 5456535), (56, 4677030), (60, 4365228), (63, 4157360), (70, 3741624), (72, 3637690), (80, 3273921), (84, 3118020), (90, 2910152), (105, 2494416), (112, 2338515), (120, 2182614), (126, 2078680), (140, 1870812), (144, 1818845), (157, 1668240), (168, 1559010), (180, 1455076), (210, 1247208), (240, 1091307), (252, 1039340), (280, 935406), (314, 834120), (315, 831472), (331, 791280), (336, 779505), (360, 727538), (420, 623604), (471, 556080), (504, 519670), (560, 467703), (628, 417060), (630, 415736), (662, 395640), (720, 363769), (785, 333648), (840, 311802), (942, 278040), (993, 263760), (1008, 259835), (1099, 238320), (1256, 208530), (1260, 207868), (1324, 197820), (1413, 185360), (1570, 166824), (1655, 158256), (1680, 155901), (1884, 139020), (1986, 131880), (2198, 119160), (2317, 113040), (2355, 111216), (2512, 104265), (2520, 103934), (2648, 98910), (2826, 92680), (2979, 87920), (3140, 83412), (3297, 79440), (3310, 79128), (3768, 69510), (3972, 65940), (4396, 59580), (4634, 56520), (4710, 55608), (4965, 52752), (5040, 51967), (5296, 49455), (5495, 47664), (5652, 46340), (5958, 43960), (6280, 41706), (6594, 39720), (6620, 39564), (6951, 37680), (7065, 37072), (7536, 34755), (7944, 32970), (8792, 29790), (9268, 28260), (9420, 27804), (9891, 26480), (9930, 26376), (10990, 23832), (11304, 23170), (11585, 22608), (11916, 21980), (12560, 20853), (13188, 19860), (13240, 19782), (13902, 18840), (14130, 18536), (14895, 17584), (15888, 16485)]