28296009

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 49004800

約数和(自身を除く): 20708791

約数列:

[1, 3, 7, 9, 21, 37, 61, 63, 111, 183, 199, 259, 333, 427, 549, 597, 777, 1281, 1393, 1791, 2257, 2331, 3843, 4179, 6771, 7363, 12139, 12537, 15799, 20313, 22089, 36417, 47397, 51541, 66267, 84973, 109251, 142191, 154623, 254919, 449143, 463869, 764757, 1347429, 3144001, 4042287, 9432003, 28296009]

約数ペア:

[(1, 28296009), (3, 9432003), (7, 4042287), (9, 3144001), (21, 1347429), (37, 764757), (61, 463869), (63, 449143), (111, 254919), (183, 154623), (199, 142191), (259, 109251), (333, 84973), (427, 66267), (549, 51541), (597, 47397), (777, 36417), (1281, 22089), (1393, 20313), (1791, 15799), (2257, 12537), (2331, 12139), (3843, 7363), (4179, 6771)]