28266165

素因数分解:

$3^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{983}}^1$

素因数の和:1071

約数の個数: 40

約数和(自身を含む): 51435648

約数和(自身を除く): 23169483

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 81, 135, 213, 355, 405, 639, 983, 1065, 1917, 2949, 3195, 4915, 5751, 8847, 9585, 14745, 26541, 28755, 44235, 69793, 79623, 132705, 209379, 348965, 398115, 628137, 1046895, 1884411, 3140685, 5653233, 9422055, 28266165]

約数ペア:

[(1, 28266165), (3, 9422055), (5, 5653233), (9, 3140685), (15, 1884411), (27, 1046895), (45, 628137), (71, 398115), (81, 348965), (135, 209379), (213, 132705), (355, 79623), (405, 69793), (639, 44235), (983, 28755), (1065, 26541), (1917, 14745), (2949, 9585), (3195, 8847), (4915, 5751)]