21063378

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:271

約数の個数: 64

約数和(自身を含む): 50181120

約数和(自身を除く): 29117742

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 43, 86, 107, 109, 129, 214, 218, 258, 301, 321, 327, 602, 642, 654, 749, 763, 903, 1498, 1526, 1806, 2247, 2289, 4494, 4578, 4601, 4687, 9202, 9374, 11663, 13803, 14061, 23326, 27606, 28122, 32207, 32809, 34989, 64414, 65618, 69978, 81641, 96621, 98427, 163282, 193242, 196854, 244923, 489846, 501509, 1003018, 1504527, 3009054, 3510563, 7021126, 10531689, 21063378]

約数ペア:

[(1, 21063378), (2, 10531689), (3, 7021126), (6, 3510563), (7, 3009054), (14, 1504527), (21, 1003018), (42, 501509), (43, 489846), (86, 244923), (107, 196854), (109, 193242), (129, 163282), (214, 98427), (218, 96621), (258, 81641), (301, 69978), (321, 65618), (327, 64414), (602, 34989), (642, 32809), (654, 32207), (749, 28122), (763, 27606), (903, 23326), (1498, 14061), (1526, 13803), (1806, 11663), (2247, 9374), (2289, 9202), (4494, 4687), (4578, 4601)]