20811168

素因数分解:

$2^5\times 3^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:97

約数の個数: 240

約数和(自身を含む): 74156544

約数和(自身を除く): 53345376

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 31, 32, 36, 37, 42, 48, 54, 56, 62, 63, 72, 74, 81, 84, 93, 96, 108, 111, 112, 124, 126, 144, 148, 162, 168, 186, 189, 216, 217, 222, 224, 248, 252, 259, 279, 288, 296, 324, 333, 336, 372, 378, 432, 434, 444, 496, 504, 518, 558, 567, 592, 648, 651, 666, 672, 744, 756, 777, 837, 864, 868, 888, 992, 999, 1008, 1036, 1116, 1134, 1147, 1184, 1296, 1302, 1332, 1488, 1512, 1554, 1674, 1736, 1776, 1953, 1998, 2016, 2072, 2232, 2268, 2294, 2331, 2511, 2592, 2604, 2664, 2976, 2997, 3024, 3108, 3348, 3441, 3472, 3552, 3906, 3996, 4144, 4464, 4536, 4588, 4662, 5022, 5208, 5328, 5859, 5994, 6048, 6216, 6696, 6882, 6944, 6993, 7812, 7992, 8029, 8288, 8928, 9072, 9176, 9324, 10044, 10323, 10416, 10656, 11718, 11988, 12432, 13392, 13764, 13986, 15624, 15984, 16058, 17577, 18144, 18352, 18648, 20088, 20646, 20832, 20979, 23436, 23976, 24087, 24864, 26784, 27528, 27972, 30969, 31248, 31968, 32116, 35154, 36704, 37296, 40176, 41292, 41958, 46872, 47952, 48174, 55056, 55944, 61938, 62496, 64232, 70308, 72261, 74592, 80352, 82584, 83916, 92907, 93744, 95904, 96348, 110112, 111888, 123876, 128464, 140616, 144522, 165168, 167832, 185814, 187488, 192696, 216783, 223776, 247752, 256928, 281232, 289044, 330336, 335664, 371628, 385392, 433566, 495504, 562464, 578088, 650349, 671328, 743256, 770784, 867132, 991008, 1156176, 1300698, 1486512, 1734264, 2312352, 2601396, 2973024, 3468528, 5202792, 6937056, 10405584, 20811168]

約数ペア:

[(1, 20811168), (2, 10405584), (3, 6937056), (4, 5202792), (6, 3468528), (7, 2973024), (8, 2601396), (9, 2312352), (12, 1734264), (14, 1486512), (16, 1300698), (18, 1156176), (21, 991008), (24, 867132), (27, 770784), (28, 743256), (31, 671328), (32, 650349), (36, 578088), (37, 562464), (42, 495504), (48, 433566), (54, 385392), (56, 371628), (62, 335664), (63, 330336), (72, 289044), (74, 281232), (81, 256928), (84, 247752), (93, 223776), (96, 216783), (108, 192696), (111, 187488), (112, 185814), (124, 167832), (126, 165168), (144, 144522), (148, 140616), (162, 128464), (168, 123876), (186, 111888), (189, 110112), (216, 96348), (217, 95904), (222, 93744), (224, 92907), (248, 83916), (252, 82584), (259, 80352), (279, 74592), (288, 72261), (296, 70308), (324, 64232), (333, 62496), (336, 61938), (372, 55944), (378, 55056), (432, 48174), (434, 47952), (444, 46872), (496, 41958), (504, 41292), (518, 40176), (558, 37296), (567, 36704), (592, 35154), (648, 32116), (651, 31968), (666, 31248), (672, 30969), (744, 27972), (756, 27528), (777, 26784), (837, 24864), (864, 24087), (868, 23976), (888, 23436), (992, 20979), (999, 20832), (1008, 20646), (1036, 20088), (1116, 18648), (1134, 18352), (1147, 18144), (1184, 17577), (1296, 16058), (1302, 15984), (1332, 15624), (1488, 13986), (1512, 13764), (1554, 13392), (1674, 12432), (1736, 11988), (1776, 11718), (1953, 10656), (1998, 10416), (2016, 10323), (2072, 10044), (2232, 9324), (2268, 9176), (2294, 9072), (2331, 8928), (2511, 8288), (2592, 8029), (2604, 7992), (2664, 7812), (2976, 6993), (2997, 6944), (3024, 6882), (3108, 6696), (3348, 6216), (3441, 6048), (3472, 5994), (3552, 5859), (3906, 5328), (3996, 5208), (4144, 5022), (4464, 4662), (4536, 4588)]