28188693

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{431}}^1$

素因数の和:506

約数の個数: 36

約数和(自身を含む): 45220032

約数和(自身を除く): 17031339

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 169, 387, 431, 507, 559, 1293, 1521, 1677, 3879, 5031, 5603, 7267, 16809, 18533, 21801, 50427, 55599, 65403, 72839, 166797, 218517, 240929, 655551, 722787, 2168361, 3132077, 9396231, 28188693]

約数ペア:

[(1, 28188693), (3, 9396231), (9, 3132077), (13, 2168361), (39, 722787), (43, 655551), (117, 240929), (129, 218517), (169, 166797), (387, 72839), (431, 65403), (507, 55599), (559, 50427), (1293, 21801), (1521, 18533), (1677, 16809), (3879, 7267), (5031, 5603)]