28295883

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{307}}^1$

素因数の和:357

約数の個数: 72

約数和(自身を含む): 54774720

約数和(自身を除く): 26478837

約数列:

[1, 3, 7, 9, 11, 19, 21, 33, 49, 57, 63, 77, 99, 133, 147, 171, 209, 231, 307, 399, 441, 539, 627, 693, 921, 931, 1197, 1463, 1617, 1881, 2149, 2763, 2793, 3377, 4389, 4851, 5833, 6447, 8379, 10131, 10241, 13167, 15043, 17499, 19341, 23639, 30393, 30723, 40831, 45129, 52497, 64163, 70917, 92169, 122493, 135387, 165473, 192489, 212751, 285817, 367479, 449141, 496419, 577467, 857451, 1347423, 1489257, 2572353, 3143987, 4042269, 9431961, 28295883]

約数ペア:

[(1, 28295883), (3, 9431961), (7, 4042269), (9, 3143987), (11, 2572353), (19, 1489257), (21, 1347423), (33, 857451), (49, 577467), (57, 496419), (63, 449141), (77, 367479), (99, 285817), (133, 212751), (147, 192489), (171, 165473), (209, 135387), (231, 122493), (307, 92169), (399, 70917), (441, 64163), (539, 52497), (627, 45129), (693, 40831), (921, 30723), (931, 30393), (1197, 23639), (1463, 19341), (1617, 17499), (1881, 15043), (2149, 13167), (2763, 10241), (2793, 10131), (3377, 8379), (4389, 6447), (4851, 5833)]