20285265

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1$

素因数の和:239

約数の個数: 96

約数和(自身を含む): 44585856

約数和(自身を除く): 24300591

約数列:

[1, 3, 5, 7, 11, 13, 15, 21, 33, 35, 39, 49, 55, 65, 77, 91, 105, 143, 147, 165, 193, 195, 231, 245, 273, 385, 429, 455, 539, 579, 637, 715, 735, 965, 1001, 1155, 1351, 1365, 1617, 1911, 2123, 2145, 2509, 2695, 2895, 3003, 3185, 4053, 5005, 6369, 6755, 7007, 7527, 8085, 9457, 9555, 10615, 12545, 14861, 15015, 17563, 20265, 21021, 27599, 28371, 31845, 35035, 37635, 44583, 47285, 52689, 74305, 82797, 87815, 104027, 105105, 122941, 137995, 141855, 193193, 222915, 263445, 312081, 368823, 413985, 520135, 579579, 614705, 965965, 1352351, 1560405, 1844115, 2897895, 4057053, 6761755, 20285265]

約数ペア:

[(1, 20285265), (3, 6761755), (5, 4057053), (7, 2897895), (11, 1844115), (13, 1560405), (15, 1352351), (21, 965965), (33, 614705), (35, 579579), (39, 520135), (49, 413985), (55, 368823), (65, 312081), (77, 263445), (91, 222915), (105, 193193), (143, 141855), (147, 137995), (165, 122941), (193, 105105), (195, 104027), (231, 87815), (245, 82797), (273, 74305), (385, 52689), (429, 47285), (455, 44583), (539, 37635), (579, 35035), (637, 31845), (715, 28371), (735, 27599), (965, 21021), (1001, 20265), (1155, 17563), (1351, 15015), (1365, 14861), (1617, 12545), (1911, 10615), (2123, 9555), (2145, 9457), (2509, 8085), (2695, 7527), (2895, 7007), (3003, 6755), (3185, 6369), (4053, 5005)]