20942768

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{191}}^1$

素因数の和:306

約数の個数: 80

約数和(自身を含む): 51425280

約数和(自身を除く): 30482512

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 89, 112, 154, 176, 178, 191, 308, 356, 382, 616, 623, 712, 764, 979, 1232, 1246, 1337, 1424, 1528, 1958, 2101, 2492, 2674, 3056, 3916, 4202, 4984, 5348, 6853, 7832, 8404, 9968, 10696, 13706, 14707, 15664, 16808, 16999, 21392, 27412, 29414, 33616, 33998, 54824, 58828, 67996, 109648, 117656, 118993, 135992, 186989, 235312, 237986, 271984, 373978, 475972, 747956, 951944, 1308923, 1495912, 1903888, 2617846, 2991824, 5235692, 10471384, 20942768]

約数ペア:

[(1, 20942768), (2, 10471384), (4, 5235692), (7, 2991824), (8, 2617846), (11, 1903888), (14, 1495912), (16, 1308923), (22, 951944), (28, 747956), (44, 475972), (56, 373978), (77, 271984), (88, 237986), (89, 235312), (112, 186989), (154, 135992), (176, 118993), (178, 117656), (191, 109648), (308, 67996), (356, 58828), (382, 54824), (616, 33998), (623, 33616), (712, 29414), (764, 27412), (979, 21392), (1232, 16999), (1246, 16808), (1337, 15664), (1424, 14707), (1528, 13706), (1958, 10696), (2101, 9968), (2492, 8404), (2674, 7832), (3056, 6853), (3916, 5348), (4202, 4984)]