28073871

素因数分解:

$3^4\times 7^1\times {\mathrm{67}}^1\times {\mathrm{739}}^1$

素因数の和:825

約数の個数: 40

約数和(自身を含む): 48709760

約数和(自身を除く): 20635889

約数列:

[1, 3, 7, 9, 21, 27, 63, 67, 81, 189, 201, 469, 567, 603, 739, 1407, 1809, 2217, 4221, 5173, 5427, 6651, 12663, 15519, 19953, 37989, 46557, 49513, 59859, 139671, 148539, 346591, 419013, 445617, 1039773, 1336851, 3119319, 4010553, 9357957, 28073871]

約数ペア:

[(1, 28073871), (3, 9357957), (7, 4010553), (9, 3119319), (21, 1336851), (27, 1039773), (63, 445617), (67, 419013), (81, 346591), (189, 148539), (201, 139671), (469, 59859), (567, 49513), (603, 46557), (739, 37989), (1407, 19953), (1809, 15519), (2217, 12663), (4221, 6651), (5173, 5427)]