21040908

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{2341}}^1$

素因数の和:2462

約数の個数: 48

約数和(自身を含む): 56657664

約数和(自身を除く): 35616756

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 107, 214, 321, 428, 642, 749, 1284, 1498, 2247, 2341, 2996, 4494, 4682, 7023, 8988, 9364, 14046, 16387, 28092, 32774, 49161, 65548, 98322, 196644, 250487, 500974, 751461, 1001948, 1502922, 1753409, 3005844, 3506818, 5260227, 7013636, 10520454, 21040908]

約数ペア:

[(1, 21040908), (2, 10520454), (3, 7013636), (4, 5260227), (6, 3506818), (7, 3005844), (12, 1753409), (14, 1502922), (21, 1001948), (28, 751461), (42, 500974), (84, 250487), (107, 196644), (214, 98322), (321, 65548), (428, 49161), (642, 32774), (749, 28092), (1284, 16387), (1498, 14046), (2247, 9364), (2341, 8988), (2996, 7023), (4494, 4682)]