19935531

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1$

素因数の和:293

約数の個数: 64

約数和(自身を含む): 37847040

約数和(自身を除く): 17911509

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 43, 63, 77, 99, 129, 189, 223, 231, 297, 301, 387, 473, 669, 693, 903, 1161, 1419, 1561, 2007, 2079, 2453, 2709, 3311, 4257, 4683, 6021, 7359, 8127, 9589, 9933, 12771, 14049, 17171, 22077, 28767, 29799, 42147, 51513, 66231, 67123, 86301, 89397, 105479, 154539, 201369, 258903, 316437, 463617, 604107, 738353, 949311, 1812321, 2215059, 2847933, 6645177, 19935531]

約数ペア:

[(1, 19935531), (3, 6645177), (7, 2847933), (9, 2215059), (11, 1812321), (21, 949311), (27, 738353), (33, 604107), (43, 463617), (63, 316437), (77, 258903), (99, 201369), (129, 154539), (189, 105479), (223, 89397), (231, 86301), (297, 67123), (301, 66231), (387, 51513), (473, 42147), (669, 29799), (693, 28767), (903, 22077), (1161, 17171), (1419, 14049), (1561, 12771), (2007, 9933), (2079, 9589), (2453, 8127), (2709, 7359), (3311, 6021), (4257, 4683)]