28008747

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{397}}^1$

素因数の和:489

約数の個数: 40

約数和(自身を含む): 45846416

約数和(自身を除く): 17837669

約数列:

[1, 3, 9, 13, 27, 39, 67, 81, 117, 201, 351, 397, 603, 871, 1053, 1191, 1809, 2613, 3573, 5161, 5427, 7839, 10719, 15483, 23517, 26599, 32157, 46449, 70551, 79797, 139347, 239391, 345787, 418041, 718173, 1037361, 2154519, 3112083, 9336249, 28008747]

約数ペア:

[(1, 28008747), (3, 9336249), (9, 3112083), (13, 2154519), (27, 1037361), (39, 718173), (67, 418041), (81, 345787), (117, 239391), (201, 139347), (351, 79797), (397, 70551), (603, 46449), (871, 32157), (1053, 26599), (1191, 23517), (1809, 15483), (2613, 10719), (3573, 7839), (5161, 5427)]