257377680

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{229}}^1$

素因数の和:478

約数の個数: 240

約数和(自身を含む): 996602880

約数和(自身を除く): 739225200

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, 168, 180, 210, 223, 229, 240, 252, 280, 315, 336, 360, 420, 446, 458, 504, 560, 630, 669, 687, 720, 840, 892, 916, 1008, 1115, 1145, 1260, 1338, 1374, 1561, 1603, 1680, 1784, 1832, 2007, 2061, 2230, 2290, 2520, 2676, 2748, 3122, 3206, 3345, 3435, 3568, 3664, 4014, 4122, 4460, 4580, 4683, 4809, 5040, 5352, 5496, 6244, 6412, 6690, 6870, 7805, 8015, 8028, 8244, 8920, 9160, 9366, 9618, 10035, 10305, 10704, 10992, 12488, 12824, 13380, 13740, 14049, 14427, 15610, 16030, 16056, 16488, 17840, 18320, 18732, 19236, 20070, 20610, 23415, 24045, 24976, 25648, 26760, 27480, 28098, 28854, 31220, 32060, 32112, 32976, 37464, 38472, 40140, 41220, 46830, 48090, 51067, 53520, 54960, 56196, 57708, 62440, 64120, 70245, 72135, 74928, 76944, 80280, 82440, 93660, 96180, 102134, 112392, 115416, 124880, 128240, 140490, 144270, 153201, 160560, 164880, 187320, 192360, 204268, 224784, 230832, 255335, 280980, 288540, 306402, 357469, 374640, 384720, 408536, 459603, 510670, 561960, 577080, 612804, 714938, 766005, 817072, 919206, 1021340, 1072407, 1123920, 1154160, 1225608, 1429876, 1532010, 1787345, 1838412, 2042680, 2144814, 2298015, 2451216, 2859752, 3064020, 3217221, 3574690, 3676824, 4085360, 4289628, 4596030, 5362035, 5719504, 6128040, 6434442, 7149380, 7353648, 8579256, 9192060, 10724070, 12256080, 12868884, 14298760, 16086105, 17158512, 18384120, 21448140, 25737768, 28597520, 32172210, 36768240, 42896280, 51475536, 64344420, 85792560, 128688840, 257377680]

約数ペア:

[(1, 257377680), (2, 128688840), (3, 85792560), (4, 64344420), (5, 51475536), (6, 42896280), (7, 36768240), (8, 32172210), (9, 28597520), (10, 25737768), (12, 21448140), (14, 18384120), (15, 17158512), (16, 16086105), (18, 14298760), (20, 12868884), (21, 12256080), (24, 10724070), (28, 9192060), (30, 8579256), (35, 7353648), (36, 7149380), (40, 6434442), (42, 6128040), (45, 5719504), (48, 5362035), (56, 4596030), (60, 4289628), (63, 4085360), (70, 3676824), (72, 3574690), (80, 3217221), (84, 3064020), (90, 2859752), (105, 2451216), (112, 2298015), (120, 2144814), (126, 2042680), (140, 1838412), (144, 1787345), (168, 1532010), (180, 1429876), (210, 1225608), (223, 1154160), (229, 1123920), (240, 1072407), (252, 1021340), (280, 919206), (315, 817072), (336, 766005), (360, 714938), (420, 612804), (446, 577080), (458, 561960), (504, 510670), (560, 459603), (630, 408536), (669, 384720), (687, 374640), (720, 357469), (840, 306402), (892, 288540), (916, 280980), (1008, 255335), (1115, 230832), (1145, 224784), (1260, 204268), (1338, 192360), (1374, 187320), (1561, 164880), (1603, 160560), (1680, 153201), (1784, 144270), (1832, 140490), (2007, 128240), (2061, 124880), (2230, 115416), (2290, 112392), (2520, 102134), (2676, 96180), (2748, 93660), (3122, 82440), (3206, 80280), (3345, 76944), (3435, 74928), (3568, 72135), (3664, 70245), (4014, 64120), (4122, 62440), (4460, 57708), (4580, 56196), (4683, 54960), (4809, 53520), (5040, 51067), (5352, 48090), (5496, 46830), (6244, 41220), (6412, 40140), (6690, 38472), (6870, 37464), (7805, 32976), (8015, 32112), (8028, 32060), (8244, 31220), (8920, 28854), (9160, 28098), (9366, 27480), (9618, 26760), (10035, 25648), (10305, 24976), (10704, 24045), (10992, 23415), (12488, 20610), (12824, 20070), (13380, 19236), (13740, 18732), (14049, 18320), (14427, 17840), (15610, 16488), (16030, 16056)]