21255696

素因数分解:

$2^4\times 3^5\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1$

素因数の和:112

約数の個数: 240

約数和(自身を含む): 77995008

約数和(自身を除く): 56739312

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 14, 16, 18, 21, 22, 24, 27, 28, 33, 36, 42, 44, 48, 54, 56, 63, 66, 71, 72, 77, 81, 84, 88, 99, 108, 112, 126, 132, 142, 144, 154, 162, 168, 176, 189, 198, 213, 216, 231, 243, 252, 264, 284, 297, 308, 324, 336, 378, 396, 426, 432, 462, 486, 497, 504, 528, 567, 568, 594, 616, 639, 648, 693, 756, 781, 792, 852, 891, 924, 972, 994, 1008, 1134, 1136, 1188, 1232, 1278, 1296, 1386, 1491, 1512, 1562, 1584, 1701, 1704, 1782, 1848, 1917, 1944, 1988, 2079, 2268, 2343, 2376, 2556, 2673, 2772, 2982, 3024, 3124, 3402, 3408, 3564, 3696, 3834, 3888, 3976, 4158, 4473, 4536, 4686, 4752, 5112, 5346, 5467, 5544, 5751, 5964, 6237, 6248, 6804, 7029, 7128, 7668, 7952, 8316, 8946, 9072, 9372, 10224, 10692, 10934, 11088, 11502, 11928, 12474, 12496, 13419, 13608, 14058, 14256, 15336, 16401, 16632, 17253, 17892, 18711, 18744, 21087, 21384, 21868, 23004, 23856, 24948, 26838, 27216, 28116, 30672, 32802, 33264, 34506, 35784, 37422, 37488, 40257, 42174, 42768, 43736, 46008, 49203, 49896, 53676, 56232, 63261, 65604, 69012, 71568, 74844, 80514, 84348, 87472, 92016, 98406, 99792, 107352, 112464, 120771, 126522, 131208, 138024, 147609, 149688, 161028, 168696, 189783, 196812, 214704, 241542, 253044, 262416, 276048, 295218, 299376, 322056, 337392, 379566, 393624, 442827, 483084, 506088, 590436, 644112, 759132, 787248, 885654, 966168, 1012176, 1180872, 1328481, 1518264, 1771308, 1932336, 2361744, 2656962, 3036528, 3542616, 5313924, 7085232, 10627848, 21255696]

約数ペア:

[(1, 21255696), (2, 10627848), (3, 7085232), (4, 5313924), (6, 3542616), (7, 3036528), (8, 2656962), (9, 2361744), (11, 1932336), (12, 1771308), (14, 1518264), (16, 1328481), (18, 1180872), (21, 1012176), (22, 966168), (24, 885654), (27, 787248), (28, 759132), (33, 644112), (36, 590436), (42, 506088), (44, 483084), (48, 442827), (54, 393624), (56, 379566), (63, 337392), (66, 322056), (71, 299376), (72, 295218), (77, 276048), (81, 262416), (84, 253044), (88, 241542), (99, 214704), (108, 196812), (112, 189783), (126, 168696), (132, 161028), (142, 149688), (144, 147609), (154, 138024), (162, 131208), (168, 126522), (176, 120771), (189, 112464), (198, 107352), (213, 99792), (216, 98406), (231, 92016), (243, 87472), (252, 84348), (264, 80514), (284, 74844), (297, 71568), (308, 69012), (324, 65604), (336, 63261), (378, 56232), (396, 53676), (426, 49896), (432, 49203), (462, 46008), (486, 43736), (497, 42768), (504, 42174), (528, 40257), (567, 37488), (568, 37422), (594, 35784), (616, 34506), (639, 33264), (648, 32802), (693, 30672), (756, 28116), (781, 27216), (792, 26838), (852, 24948), (891, 23856), (924, 23004), (972, 21868), (994, 21384), (1008, 21087), (1134, 18744), (1136, 18711), (1188, 17892), (1232, 17253), (1278, 16632), (1296, 16401), (1386, 15336), (1491, 14256), (1512, 14058), (1562, 13608), (1584, 13419), (1701, 12496), (1704, 12474), (1782, 11928), (1848, 11502), (1917, 11088), (1944, 10934), (1988, 10692), (2079, 10224), (2268, 9372), (2343, 9072), (2376, 8946), (2556, 8316), (2673, 7952), (2772, 7668), (2982, 7128), (3024, 7029), (3124, 6804), (3402, 6248), (3408, 6237), (3564, 5964), (3696, 5751), (3834, 5544), (3888, 5467), (3976, 5346), (4158, 5112), (4473, 4752), (4536, 4686)]