81605888

素因数分解:

$2^8\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1$

素因数の和:180

約数の個数: 144

約数和(自身を含む): 208782336

約数和(自身を除く): 127176448

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 31, 32, 52, 56, 62, 64, 91, 104, 112, 113, 124, 128, 182, 208, 217, 224, 226, 248, 256, 364, 403, 416, 434, 448, 452, 496, 728, 791, 806, 832, 868, 896, 904, 992, 1456, 1469, 1582, 1612, 1664, 1736, 1792, 1808, 1984, 2821, 2912, 2938, 3164, 3224, 3328, 3472, 3503, 3616, 3968, 5642, 5824, 5876, 6328, 6448, 6944, 7006, 7232, 7936, 10283, 11284, 11648, 11752, 12656, 12896, 13888, 14012, 14464, 20566, 22568, 23296, 23504, 24521, 25312, 25792, 27776, 28024, 28928, 41132, 45136, 45539, 47008, 49042, 50624, 51584, 55552, 56048, 82264, 90272, 91078, 94016, 98084, 101248, 103168, 112096, 164528, 180544, 182156, 188032, 196168, 202496, 224192, 318773, 329056, 361088, 364312, 376064, 392336, 448384, 637546, 658112, 722176, 728624, 784672, 896768, 1275092, 1316224, 1457248, 1569344, 2550184, 2632448, 2914496, 3138688, 5100368, 5828992, 6277376, 10200736, 11657984, 20401472, 40802944, 81605888]

約数ペア:

[(1, 81605888), (2, 40802944), (4, 20401472), (7, 11657984), (8, 10200736), (13, 6277376), (14, 5828992), (16, 5100368), (26, 3138688), (28, 2914496), (31, 2632448), (32, 2550184), (52, 1569344), (56, 1457248), (62, 1316224), (64, 1275092), (91, 896768), (104, 784672), (112, 728624), (113, 722176), (124, 658112), (128, 637546), (182, 448384), (208, 392336), (217, 376064), (224, 364312), (226, 361088), (248, 329056), (256, 318773), (364, 224192), (403, 202496), (416, 196168), (434, 188032), (448, 182156), (452, 180544), (496, 164528), (728, 112096), (791, 103168), (806, 101248), (832, 98084), (868, 94016), (896, 91078), (904, 90272), (992, 82264), (1456, 56048), (1469, 55552), (1582, 51584), (1612, 50624), (1664, 49042), (1736, 47008), (1792, 45539), (1808, 45136), (1984, 41132), (2821, 28928), (2912, 28024), (2938, 27776), (3164, 25792), (3224, 25312), (3328, 24521), (3472, 23504), (3503, 23296), (3616, 22568), (3968, 20566), (5642, 14464), (5824, 14012), (5876, 13888), (6328, 12896), (6448, 12656), (6944, 11752), (7006, 11648), (7232, 11284), (7936, 10283)]