81731328

素因数分解:

$2^8\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{661}}^1$

素因数の和:710

約数の個数: 144

約数和(自身を含む): 259800576

約数和(自身を除く): 178069248

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 23, 24, 28, 32, 42, 46, 48, 56, 64, 69, 84, 92, 96, 112, 128, 138, 161, 168, 184, 192, 224, 256, 276, 322, 336, 368, 384, 448, 483, 552, 644, 661, 672, 736, 768, 896, 966, 1104, 1288, 1322, 1344, 1472, 1792, 1932, 1983, 2208, 2576, 2644, 2688, 2944, 3864, 3966, 4416, 4627, 5152, 5288, 5376, 5888, 7728, 7932, 8832, 9254, 10304, 10576, 13881, 15203, 15456, 15864, 17664, 18508, 20608, 21152, 27762, 30406, 30912, 31728, 37016, 41216, 42304, 45609, 55524, 60812, 61824, 63456, 74032, 84608, 91218, 106421, 111048, 121624, 123648, 126912, 148064, 169216, 182436, 212842, 222096, 243248, 253824, 296128, 319263, 364872, 425684, 444192, 486496, 507648, 592256, 638526, 729744, 851368, 888384, 972992, 1184512, 1277052, 1459488, 1702736, 1776768, 1945984, 2554104, 2918976, 3405472, 3553536, 3891968, 5108208, 5837952, 6810944, 10216416, 11675904, 13621888, 20432832, 27243776, 40865664, 81731328]

約数ペア:

[(1, 81731328), (2, 40865664), (3, 27243776), (4, 20432832), (6, 13621888), (7, 11675904), (8, 10216416), (12, 6810944), (14, 5837952), (16, 5108208), (21, 3891968), (23, 3553536), (24, 3405472), (28, 2918976), (32, 2554104), (42, 1945984), (46, 1776768), (48, 1702736), (56, 1459488), (64, 1277052), (69, 1184512), (84, 972992), (92, 888384), (96, 851368), (112, 729744), (128, 638526), (138, 592256), (161, 507648), (168, 486496), (184, 444192), (192, 425684), (224, 364872), (256, 319263), (276, 296128), (322, 253824), (336, 243248), (368, 222096), (384, 212842), (448, 182436), (483, 169216), (552, 148064), (644, 126912), (661, 123648), (672, 121624), (736, 111048), (768, 106421), (896, 91218), (966, 84608), (1104, 74032), (1288, 63456), (1322, 61824), (1344, 60812), (1472, 55524), (1792, 45609), (1932, 42304), (1983, 41216), (2208, 37016), (2576, 31728), (2644, 30912), (2688, 30406), (2944, 27762), (3864, 21152), (3966, 20608), (4416, 18508), (4627, 17664), (5152, 15864), (5288, 15456), (5376, 15203), (5888, 13881), (7728, 10576), (7932, 10304), (8832, 9254)]