18864580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1061}}^1$

素因数の和:1204

約数の個数: 48

約数和(自身を含む): 45674496

約数和(自身を除く): 26809916

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 127, 140, 254, 508, 635, 889, 1061, 1270, 1778, 2122, 2540, 3556, 4244, 4445, 5305, 7427, 8890, 10610, 14854, 17780, 21220, 29708, 37135, 74270, 134747, 148540, 269494, 538988, 673735, 943229, 1347470, 1886458, 2694940, 3772916, 4716145, 9432290, 18864580]

約数ペア:

[(1, 18864580), (2, 9432290), (4, 4716145), (5, 3772916), (7, 2694940), (10, 1886458), (14, 1347470), (20, 943229), (28, 673735), (35, 538988), (70, 269494), (127, 148540), (140, 134747), (254, 74270), (508, 37135), (635, 29708), (889, 21220), (1061, 17780), (1270, 14854), (1778, 10610), (2122, 8890), (2540, 7427), (3556, 5305), (4244, 4445)]