19904360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1061}}^1$

素因数の和:1146

約数の個数: 64

約数和(自身を含む): 51995520

約数和(自身を除く): 32091160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 67, 70, 134, 140, 268, 280, 335, 469, 536, 670, 938, 1061, 1340, 1876, 2122, 2345, 2680, 3752, 4244, 4690, 5305, 7427, 8488, 9380, 10610, 14854, 18760, 21220, 29708, 37135, 42440, 59416, 71087, 74270, 142174, 148540, 284348, 297080, 355435, 497609, 568696, 710870, 995218, 1421740, 1990436, 2488045, 2843480, 3980872, 4976090, 9952180, 19904360]

約数ペア:

[(1, 19904360), (2, 9952180), (4, 4976090), (5, 3980872), (7, 2843480), (8, 2488045), (10, 1990436), (14, 1421740), (20, 995218), (28, 710870), (35, 568696), (40, 497609), (56, 355435), (67, 297080), (70, 284348), (134, 148540), (140, 142174), (268, 74270), (280, 71087), (335, 59416), (469, 42440), (536, 37135), (670, 29708), (938, 21220), (1061, 18760), (1340, 14854), (1876, 10610), (2122, 9380), (2345, 8488), (2680, 7427), (3752, 5305), (4244, 4690)]