640878336

素因数分解:

$2^8\times 3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{503}}^1$

素因数の和:611

約数の個数: 216

約数和(自身を含む): 2142766080

約数和(自身を除く): 1501887744

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 48, 56, 63, 64, 72, 79, 84, 96, 112, 126, 128, 144, 158, 168, 192, 224, 237, 252, 256, 288, 316, 336, 384, 448, 474, 503, 504, 553, 576, 632, 672, 711, 768, 896, 948, 1006, 1008, 1106, 1152, 1264, 1344, 1422, 1509, 1659, 1792, 1896, 2012, 2016, 2212, 2304, 2528, 2688, 2844, 3018, 3318, 3521, 3792, 4024, 4032, 4424, 4527, 4977, 5056, 5376, 5688, 6036, 6636, 7042, 7584, 8048, 8064, 8848, 9054, 9954, 10112, 10563, 11376, 12072, 13272, 14084, 15168, 16096, 16128, 17696, 18108, 19908, 20224, 21126, 22752, 24144, 26544, 28168, 30336, 31689, 32192, 35392, 36216, 39737, 39816, 42252, 45504, 48288, 53088, 56336, 60672, 63378, 64384, 70784, 72432, 79474, 79632, 84504, 91008, 96576, 106176, 112672, 119211, 126756, 128768, 141568, 144864, 158948, 159264, 169008, 182016, 193152, 212352, 225344, 238422, 253512, 278159, 289728, 317896, 318528, 338016, 357633, 386304, 424704, 450688, 476844, 507024, 556318, 579456, 635792, 637056, 676032, 715266, 834477, 901376, 953688, 1014048, 1112636, 1158912, 1271584, 1274112, 1352064, 1430532, 1668954, 1907376, 2028096, 2225272, 2503431, 2543168, 2704128, 2861064, 3337908, 3814752, 4056192, 4450544, 5006862, 5086336, 5722128, 6675816, 7629504, 8112384, 8901088, 10013724, 10172672, 11444256, 13351632, 15259008, 17802176, 20027448, 22888512, 26703264, 30518016, 35604352, 40054896, 45777024, 53406528, 71208704, 80109792, 91554048, 106813056, 160219584, 213626112, 320439168, 640878336]

約数ペア:

[(1, 640878336), (2, 320439168), (3, 213626112), (4, 160219584), (6, 106813056), (7, 91554048), (8, 80109792), (9, 71208704), (12, 53406528), (14, 45777024), (16, 40054896), (18, 35604352), (21, 30518016), (24, 26703264), (28, 22888512), (32, 20027448), (36, 17802176), (42, 15259008), (48, 13351632), (56, 11444256), (63, 10172672), (64, 10013724), (72, 8901088), (79, 8112384), (84, 7629504), (96, 6675816), (112, 5722128), (126, 5086336), (128, 5006862), (144, 4450544), (158, 4056192), (168, 3814752), (192, 3337908), (224, 2861064), (237, 2704128), (252, 2543168), (256, 2503431), (288, 2225272), (316, 2028096), (336, 1907376), (384, 1668954), (448, 1430532), (474, 1352064), (503, 1274112), (504, 1271584), (553, 1158912), (576, 1112636), (632, 1014048), (672, 953688), (711, 901376), (768, 834477), (896, 715266), (948, 676032), (1006, 637056), (1008, 635792), (1106, 579456), (1152, 556318), (1264, 507024), (1344, 476844), (1422, 450688), (1509, 424704), (1659, 386304), (1792, 357633), (1896, 338016), (2012, 318528), (2016, 317896), (2212, 289728), (2304, 278159), (2528, 253512), (2688, 238422), (2844, 225344), (3018, 212352), (3318, 193152), (3521, 182016), (3792, 169008), (4024, 159264), (4032, 158948), (4424, 144864), (4527, 141568), (4977, 128768), (5056, 126756), (5376, 119211), (5688, 112672), (6036, 106176), (6636, 96576), (7042, 91008), (7584, 84504), (8048, 79632), (8064, 79474), (8848, 72432), (9054, 70784), (9954, 64384), (10112, 63378), (10563, 60672), (11376, 56336), (12072, 53088), (13272, 48288), (14084, 45504), (15168, 42252), (16096, 39816), (16128, 39737), (17696, 36216), (18108, 35392), (19908, 32192), (20224, 31689), (21126, 30336), (22752, 28168), (24144, 26544)]