81641728

素因数分解:

$2^8\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1571}}^1$

素因数の和:1623

約数の個数: 72

約数和(自身を含む): 192790080

約数和(自身を除く): 111148352

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 32, 56, 58, 64, 112, 116, 128, 203, 224, 232, 256, 406, 448, 464, 812, 896, 928, 1571, 1624, 1792, 1856, 3142, 3248, 3712, 6284, 6496, 7424, 10997, 12568, 12992, 21994, 25136, 25984, 43988, 45559, 50272, 51968, 87976, 91118, 100544, 175952, 182236, 201088, 318913, 351904, 364472, 402176, 637826, 703808, 728944, 1275652, 1407616, 1457888, 2551304, 2815232, 2915776, 5102608, 5831552, 10205216, 11663104, 20410432, 40820864, 81641728]

約数ペア:

[(1, 81641728), (2, 40820864), (4, 20410432), (7, 11663104), (8, 10205216), (14, 5831552), (16, 5102608), (28, 2915776), (29, 2815232), (32, 2551304), (56, 1457888), (58, 1407616), (64, 1275652), (112, 728944), (116, 703808), (128, 637826), (203, 402176), (224, 364472), (232, 351904), (256, 318913), (406, 201088), (448, 182236), (464, 175952), (812, 100544), (896, 91118), (928, 87976), (1571, 51968), (1624, 50272), (1792, 45559), (1856, 43988), (3142, 25984), (3248, 25136), (3712, 21994), (6284, 12992), (6496, 12568), (7424, 10997)]