19997145

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{3023}}^1$

素因数の和:3051

約数の個数: 48

約数和(自身を含む): 41368320

約数和(自身を除く): 21371175

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 105, 135, 147, 189, 245, 315, 441, 735, 945, 1323, 2205, 3023, 6615, 9069, 15115, 21161, 27207, 45345, 63483, 81621, 105805, 136035, 148127, 190449, 317415, 408105, 444381, 571347, 740635, 952245, 1333143, 2221905, 2856735, 3999429, 6665715, 19997145]

約数ペア:

[(1, 19997145), (3, 6665715), (5, 3999429), (7, 2856735), (9, 2221905), (15, 1333143), (21, 952245), (27, 740635), (35, 571347), (45, 444381), (49, 408105), (63, 317415), (105, 190449), (135, 148127), (147, 136035), (189, 105805), (245, 81621), (315, 63483), (441, 45345), (735, 27207), (945, 21161), (1323, 15115), (2205, 9069), (3023, 6615)]