21163968

素因数分解:

$2^6\times 3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1$

素因数の和:235

約数の個数: 168

約数和(自身を含む): 72115680

約数和(自身を除く): 50951712

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 29, 32, 36, 42, 48, 56, 58, 63, 64, 72, 84, 87, 96, 112, 116, 126, 144, 168, 174, 181, 192, 203, 224, 232, 252, 261, 288, 336, 348, 362, 406, 448, 464, 504, 522, 543, 576, 609, 672, 696, 724, 812, 928, 1008, 1044, 1086, 1218, 1267, 1344, 1392, 1448, 1624, 1629, 1827, 1856, 2016, 2088, 2172, 2436, 2534, 2784, 2896, 3248, 3258, 3654, 3801, 4032, 4176, 4344, 4872, 5068, 5249, 5568, 5792, 6496, 6516, 7308, 7602, 8352, 8688, 9744, 10136, 10498, 11403, 11584, 12992, 13032, 14616, 15204, 15747, 16704, 17376, 19488, 20272, 20996, 22806, 26064, 29232, 30408, 31494, 34752, 36743, 38976, 40544, 41992, 45612, 47241, 52128, 58464, 60816, 62988, 73486, 81088, 83984, 91224, 94482, 104256, 110229, 116928, 121632, 125976, 146972, 167968, 182448, 188964, 220458, 243264, 251952, 293944, 330687, 335936, 364896, 377928, 440916, 503904, 587888, 661374, 729792, 755856, 881832, 1007808, 1175776, 1322748, 1511712, 1763664, 2351552, 2645496, 3023424, 3527328, 5290992, 7054656, 10581984, 21163968]

約数ペア:

[(1, 21163968), (2, 10581984), (3, 7054656), (4, 5290992), (6, 3527328), (7, 3023424), (8, 2645496), (9, 2351552), (12, 1763664), (14, 1511712), (16, 1322748), (18, 1175776), (21, 1007808), (24, 881832), (28, 755856), (29, 729792), (32, 661374), (36, 587888), (42, 503904), (48, 440916), (56, 377928), (58, 364896), (63, 335936), (64, 330687), (72, 293944), (84, 251952), (87, 243264), (96, 220458), (112, 188964), (116, 182448), (126, 167968), (144, 146972), (168, 125976), (174, 121632), (181, 116928), (192, 110229), (203, 104256), (224, 94482), (232, 91224), (252, 83984), (261, 81088), (288, 73486), (336, 62988), (348, 60816), (362, 58464), (406, 52128), (448, 47241), (464, 45612), (504, 41992), (522, 40544), (543, 38976), (576, 36743), (609, 34752), (672, 31494), (696, 30408), (724, 29232), (812, 26064), (928, 22806), (1008, 20996), (1044, 20272), (1086, 19488), (1218, 17376), (1267, 16704), (1344, 15747), (1392, 15204), (1448, 14616), (1624, 13032), (1629, 12992), (1827, 11584), (1856, 11403), (2016, 10498), (2088, 10136), (2172, 9744), (2436, 8688), (2534, 8352), (2784, 7602), (2896, 7308), (3248, 6516), (3258, 6496), (3654, 5792), (3801, 5568), (4032, 5249), (4176, 5068), (4344, 4872)]