18789904

素因数分解:

$2^4\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1321}}^1$

素因数の和:1463

約数の個数: 40

約数和(自身を含む): 41965568

約数和(自身を除く): 23175664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 127, 254, 508, 889, 1016, 1321, 1778, 2032, 2642, 3556, 5284, 7112, 9247, 10568, 14224, 18494, 21136, 36988, 73976, 147952, 167767, 335534, 671068, 1174369, 1342136, 2348738, 2684272, 4697476, 9394952, 18789904]

約数ペア:

[(1, 18789904), (2, 9394952), (4, 4697476), (7, 2684272), (8, 2348738), (14, 1342136), (16, 1174369), (28, 671068), (56, 335534), (112, 167767), (127, 147952), (254, 73976), (508, 36988), (889, 21136), (1016, 18494), (1321, 14224), (1778, 10568), (2032, 9247), (2642, 7112), (3556, 5284)]