21286728

素因数分解:

$2^3\times 3^2\times {\mathrm{59}}^1\times {\mathrm{5011}}^1$

素因数の和:5082

約数の個数: 48

約数和(自身を含む): 58640400

約数和(自身を除く): 37353672

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 59, 72, 118, 177, 236, 354, 472, 531, 708, 1062, 1416, 2124, 4248, 5011, 10022, 15033, 20044, 30066, 40088, 45099, 60132, 90198, 120264, 180396, 295649, 360792, 591298, 886947, 1182596, 1773894, 2365192, 2660841, 3547788, 5321682, 7095576, 10643364, 21286728]

約数ペア:

[(1, 21286728), (2, 10643364), (3, 7095576), (4, 5321682), (6, 3547788), (8, 2660841), (9, 2365192), (12, 1773894), (18, 1182596), (24, 886947), (36, 591298), (59, 360792), (72, 295649), (118, 180396), (177, 120264), (236, 90198), (354, 60132), (472, 45099), (531, 40088), (708, 30066), (1062, 20044), (1416, 15033), (2124, 10022), (4248, 5011)]