257609520

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{647}}^1$

素因数の和:752

約数の個数: 240

約数和(自身を含む): 1002792960

約数和(自身を除く): 745183440

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, 79, 80, 84, 90, 105, 112, 120, 126, 140, 144, 158, 168, 180, 210, 237, 240, 252, 280, 315, 316, 336, 360, 395, 420, 474, 504, 553, 560, 630, 632, 647, 711, 720, 790, 840, 948, 1008, 1106, 1185, 1260, 1264, 1294, 1422, 1580, 1659, 1680, 1896, 1941, 2212, 2370, 2520, 2588, 2765, 2844, 3160, 3235, 3318, 3555, 3792, 3882, 4424, 4529, 4740, 4977, 5040, 5176, 5530, 5688, 5823, 6320, 6470, 6636, 7110, 7764, 8295, 8848, 9058, 9480, 9705, 9954, 10352, 11060, 11376, 11646, 12940, 13272, 13587, 14220, 15528, 16590, 18116, 18960, 19410, 19908, 22120, 22645, 23292, 24885, 25880, 26544, 27174, 28440, 29115, 31056, 33180, 36232, 38820, 39816, 40761, 44240, 45290, 46584, 49770, 51113, 51760, 54348, 56880, 58230, 66360, 67935, 72464, 77640, 79632, 81522, 90580, 93168, 99540, 102226, 108696, 116460, 132720, 135870, 153339, 155280, 163044, 181160, 199080, 203805, 204452, 217392, 232920, 255565, 271740, 306678, 326088, 357791, 362320, 398160, 407610, 408904, 460017, 465840, 511130, 543480, 613356, 652176, 715582, 766695, 815220, 817808, 920034, 1022260, 1073373, 1086960, 1226712, 1431164, 1533390, 1630440, 1788955, 1840068, 2044520, 2146746, 2300085, 2453424, 2862328, 3066780, 3220119, 3260880, 3577910, 3680136, 4089040, 4293492, 4600170, 5366865, 5724656, 6133560, 6440238, 7155820, 7360272, 8586984, 9200340, 10733730, 12267120, 12880476, 14311640, 16100595, 17173968, 18400680, 21467460, 25760952, 28623280, 32201190, 36801360, 42934920, 51521904, 64402380, 85869840, 128804760, 257609520]

約数ペア:

[(1, 257609520), (2, 128804760), (3, 85869840), (4, 64402380), (5, 51521904), (6, 42934920), (7, 36801360), (8, 32201190), (9, 28623280), (10, 25760952), (12, 21467460), (14, 18400680), (15, 17173968), (16, 16100595), (18, 14311640), (20, 12880476), (21, 12267120), (24, 10733730), (28, 9200340), (30, 8586984), (35, 7360272), (36, 7155820), (40, 6440238), (42, 6133560), (45, 5724656), (48, 5366865), (56, 4600170), (60, 4293492), (63, 4089040), (70, 3680136), (72, 3577910), (79, 3260880), (80, 3220119), (84, 3066780), (90, 2862328), (105, 2453424), (112, 2300085), (120, 2146746), (126, 2044520), (140, 1840068), (144, 1788955), (158, 1630440), (168, 1533390), (180, 1431164), (210, 1226712), (237, 1086960), (240, 1073373), (252, 1022260), (280, 920034), (315, 817808), (316, 815220), (336, 766695), (360, 715582), (395, 652176), (420, 613356), (474, 543480), (504, 511130), (553, 465840), (560, 460017), (630, 408904), (632, 407610), (647, 398160), (711, 362320), (720, 357791), (790, 326088), (840, 306678), (948, 271740), (1008, 255565), (1106, 232920), (1185, 217392), (1260, 204452), (1264, 203805), (1294, 199080), (1422, 181160), (1580, 163044), (1659, 155280), (1680, 153339), (1896, 135870), (1941, 132720), (2212, 116460), (2370, 108696), (2520, 102226), (2588, 99540), (2765, 93168), (2844, 90580), (3160, 81522), (3235, 79632), (3318, 77640), (3555, 72464), (3792, 67935), (3882, 66360), (4424, 58230), (4529, 56880), (4740, 54348), (4977, 51760), (5040, 51113), (5176, 49770), (5530, 46584), (5688, 45290), (5823, 44240), (6320, 40761), (6470, 39816), (6636, 38820), (7110, 36232), (7764, 33180), (8295, 31056), (8848, 29115), (9058, 28440), (9480, 27174), (9705, 26544), (9954, 25880), (10352, 24885), (11060, 23292), (11376, 22645), (11646, 22120), (12940, 19908), (13272, 19410), (13587, 18960), (14220, 18116), (15528, 16590)]