21130788

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{2351}}^1$

素因数の和:2472

約数の個数: 48

約数和(自身を含む): 56899584

約数和(自身を除く): 35768796

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 107, 214, 321, 428, 642, 749, 1284, 1498, 2247, 2351, 2996, 4494, 4702, 7053, 8988, 9404, 14106, 16457, 28212, 32914, 49371, 65828, 98742, 197484, 251557, 503114, 754671, 1006228, 1509342, 1760899, 3018684, 3521798, 5282697, 7043596, 10565394, 21130788]

約数ペア:

[(1, 21130788), (2, 10565394), (3, 7043596), (4, 5282697), (6, 3521798), (7, 3018684), (12, 1760899), (14, 1509342), (21, 1006228), (28, 754671), (42, 503114), (84, 251557), (107, 197484), (214, 98742), (321, 65828), (428, 49371), (642, 32914), (749, 28212), (1284, 16457), (1498, 14106), (2247, 9404), (2351, 8988), (2996, 7053), (4494, 4702)]