278987139

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{2333}}^1$

素因数の和:2488

約数の個数: 32

約数和(自身を含む): 427215360

約数和(自身を除く): 148228221

約数列:

[1, 3, 9, 27, 43, 103, 129, 309, 387, 927, 1161, 2333, 2781, 4429, 6999, 13287, 20997, 39861, 62991, 100319, 119583, 240299, 300957, 720897, 902871, 2162691, 2708613, 6488073, 10332857, 30998571, 92995713, 278987139]

約数ペア:

[(1, 278987139), (3, 92995713), (9, 30998571), (27, 10332857), (43, 6488073), (103, 2708613), (129, 2162691), (309, 902871), (387, 720897), (927, 300957), (1161, 240299), (2333, 119583), (2781, 100319), (4429, 62991), (6999, 39861), (13287, 20997)]