18597880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{523}}^1$

素因数の和:668

約数の個数: 64

約数和(自身を含む): 48291840

約数和(自身を除く): 29693960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 127, 140, 254, 280, 508, 523, 635, 889, 1016, 1046, 1270, 1778, 2092, 2540, 2615, 3556, 3661, 4184, 4445, 5080, 5230, 7112, 7322, 8890, 10460, 14644, 17780, 18305, 20920, 29288, 35560, 36610, 66421, 73220, 132842, 146440, 265684, 332105, 464947, 531368, 664210, 929894, 1328420, 1859788, 2324735, 2656840, 3719576, 4649470, 9298940, 18597880]

約数ペア:

[(1, 18597880), (2, 9298940), (4, 4649470), (5, 3719576), (7, 2656840), (8, 2324735), (10, 1859788), (14, 1328420), (20, 929894), (28, 664210), (35, 531368), (40, 464947), (56, 332105), (70, 265684), (127, 146440), (140, 132842), (254, 73220), (280, 66421), (508, 36610), (523, 35560), (635, 29288), (889, 20920), (1016, 18305), (1046, 17780), (1270, 14644), (1778, 10460), (2092, 8890), (2540, 7322), (2615, 7112), (3556, 5230), (3661, 5080), (4184, 4445)]