1998978912

素因数分解:

$2^5\times 3^4\times 7^2\times {\mathrm{15739}}^1$

素因数の和:15775

約数の個数: 180

約数和(自身を含む): 6839203140

約数和(自身を除く): 4840224228

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 32, 36, 42, 48, 49, 54, 56, 63, 72, 81, 84, 96, 98, 108, 112, 126, 144, 147, 162, 168, 189, 196, 216, 224, 252, 288, 294, 324, 336, 378, 392, 432, 441, 504, 567, 588, 648, 672, 756, 784, 864, 882, 1008, 1134, 1176, 1296, 1323, 1512, 1568, 1764, 2016, 2268, 2352, 2592, 2646, 3024, 3528, 3969, 4536, 4704, 5292, 6048, 7056, 7938, 9072, 10584, 14112, 15739, 15876, 18144, 21168, 31478, 31752, 42336, 47217, 62956, 63504, 94434, 110173, 125912, 127008, 141651, 188868, 220346, 251824, 283302, 330519, 377736, 424953, 440692, 503648, 566604, 661038, 755472, 771211, 849906, 881384, 991557, 1133208, 1274859, 1322076, 1510944, 1542422, 1699812, 1762768, 1983114, 2266416, 2313633, 2549718, 2644152, 2974671, 3084844, 3399624, 3525536, 3966228, 4532832, 4627266, 5099436, 5288304, 5949342, 6169688, 6799248, 6940899, 7932456, 8924013, 9254532, 10198872, 10576608, 11898684, 12339376, 13598496, 13881798, 15864912, 17848026, 18509064, 20397744, 20822697, 23797368, 24678752, 27763596, 31729824, 35696052, 37018128, 40795488, 41645394, 47594736, 55527192, 62468091, 71392104, 74036256, 83290788, 95189472, 111054384, 124936182, 142784208, 166581576, 222108768, 249872364, 285568416, 333163152, 499744728, 666326304, 999489456, 1998978912]

約数ペア:

[(1, 1998978912), (2, 999489456), (3, 666326304), (4, 499744728), (6, 333163152), (7, 285568416), (8, 249872364), (9, 222108768), (12, 166581576), (14, 142784208), (16, 124936182), (18, 111054384), (21, 95189472), (24, 83290788), (27, 74036256), (28, 71392104), (32, 62468091), (36, 55527192), (42, 47594736), (48, 41645394), (49, 40795488), (54, 37018128), (56, 35696052), (63, 31729824), (72, 27763596), (81, 24678752), (84, 23797368), (96, 20822697), (98, 20397744), (108, 18509064), (112, 17848026), (126, 15864912), (144, 13881798), (147, 13598496), (162, 12339376), (168, 11898684), (189, 10576608), (196, 10198872), (216, 9254532), (224, 8924013), (252, 7932456), (288, 6940899), (294, 6799248), (324, 6169688), (336, 5949342), (378, 5288304), (392, 5099436), (432, 4627266), (441, 4532832), (504, 3966228), (567, 3525536), (588, 3399624), (648, 3084844), (672, 2974671), (756, 2644152), (784, 2549718), (864, 2313633), (882, 2266416), (1008, 1983114), (1134, 1762768), (1176, 1699812), (1296, 1542422), (1323, 1510944), (1512, 1322076), (1568, 1274859), (1764, 1133208), (2016, 991557), (2268, 881384), (2352, 849906), (2592, 771211), (2646, 755472), (3024, 661038), (3528, 566604), (3969, 503648), (4536, 440692), (4704, 424953), (5292, 377736), (6048, 330519), (7056, 283302), (7938, 251824), (9072, 220346), (10584, 188868), (14112, 141651), (15739, 127008), (15876, 125912), (18144, 110173), (21168, 94434), (31478, 63504), (31752, 62956), (42336, 47217)]