21058191

素因数分解:

$3^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1447}}^1$

素因数の和:1481

約数の個数: 48

約数和(自身を含む): 39617280

約数和(自身を除く): 18559089

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 49, 63, 77, 99, 147, 189, 231, 297, 441, 539, 693, 1323, 1447, 1617, 2079, 4341, 4851, 10129, 13023, 14553, 15917, 30387, 39069, 47751, 70903, 91161, 111419, 143253, 212709, 273483, 334257, 429759, 638127, 779933, 1002771, 1914381, 2339799, 3008313, 7019397, 21058191]

約数ペア:

[(1, 21058191), (3, 7019397), (7, 3008313), (9, 2339799), (11, 1914381), (21, 1002771), (27, 779933), (33, 638127), (49, 429759), (63, 334257), (77, 273483), (99, 212709), (147, 143253), (189, 111419), (231, 91161), (297, 70903), (441, 47751), (539, 39069), (693, 30387), (1323, 15917), (1447, 14553), (1617, 13023), (2079, 10129), (4341, 4851)]