20957281280

素因数分解:

$2^{10}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{461}}^1\times {\mathrm{683}}^1$

素因数の和:1182

約数の個数: 176

約数和(自身を含む): 54336943584

約数和(自身を除く): 33379662304

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 461, 512, 520, 640, 683, 832, 922, 1024, 1040, 1280, 1366, 1664, 1844, 2080, 2305, 2560, 2732, 3328, 3415, 3688, 4160, 4610, 5120, 5464, 5993, 6656, 6830, 7376, 8320, 8879, 9220, 10928, 11986, 13312, 13660, 14752, 16640, 17758, 18440, 21856, 23972, 27320, 29504, 29965, 33280, 35516, 36880, 43712, 44395, 47944, 54640, 59008, 59930, 66560, 71032, 73760, 87424, 88790, 95888, 109280, 118016, 119860, 142064, 147520, 174848, 177580, 191776, 218560, 236032, 239720, 284128, 295040, 314863, 349696, 355160, 383552, 437120, 472064, 479440, 568256, 590080, 629726, 699392, 710320, 767104, 874240, 958880, 1136512, 1180160, 1259452, 1420640, 1534208, 1574315, 1748480, 1917760, 2273024, 2360320, 2518904, 2841280, 3068416, 3148630, 3496960, 3835520, 4093219, 4546048, 5037808, 5682560, 6136832, 6297260, 7671040, 8186438, 9092096, 10075616, 11365120, 12594520, 15342080, 16372876, 20151232, 20466095, 22730240, 25189040, 30684160, 32745752, 40302464, 40932190, 45460480, 50378080, 65491504, 80604928, 81864380, 100756160, 130983008, 161209856, 163728760, 201512320, 261966016, 322419712, 327457520, 403024640, 523932032, 654915040, 806049280, 1047864064, 1309830080, 1612098560, 2095728128, 2619660160, 4191456256, 5239320320, 10478640640, 20957281280]

約数ペア:

[(1, 20957281280), (2, 10478640640), (4, 5239320320), (5, 4191456256), (8, 2619660160), (10, 2095728128), (13, 1612098560), (16, 1309830080), (20, 1047864064), (26, 806049280), (32, 654915040), (40, 523932032), (52, 403024640), (64, 327457520), (65, 322419712), (80, 261966016), (104, 201512320), (128, 163728760), (130, 161209856), (160, 130983008), (208, 100756160), (256, 81864380), (260, 80604928), (320, 65491504), (416, 50378080), (461, 45460480), (512, 40932190), (520, 40302464), (640, 32745752), (683, 30684160), (832, 25189040), (922, 22730240), (1024, 20466095), (1040, 20151232), (1280, 16372876), (1366, 15342080), (1664, 12594520), (1844, 11365120), (2080, 10075616), (2305, 9092096), (2560, 8186438), (2732, 7671040), (3328, 6297260), (3415, 6136832), (3688, 5682560), (4160, 5037808), (4610, 4546048), (5120, 4093219), (5464, 3835520), (5993, 3496960), (6656, 3148630), (6830, 3068416), (7376, 2841280), (8320, 2518904), (8879, 2360320), (9220, 2273024), (10928, 1917760), (11986, 1748480), (13312, 1574315), (13660, 1534208), (14752, 1420640), (16640, 1259452), (17758, 1180160), (18440, 1136512), (21856, 958880), (23972, 874240), (27320, 767104), (29504, 710320), (29965, 699392), (33280, 629726), (35516, 590080), (36880, 568256), (43712, 479440), (44395, 472064), (47944, 437120), (54640, 383552), (59008, 355160), (59930, 349696), (66560, 314863), (71032, 295040), (73760, 284128), (87424, 239720), (88790, 236032), (95888, 218560), (109280, 191776), (118016, 177580), (119860, 174848), (142064, 147520)]