28271187

素因数分解:

$3^4\times 7^2\times {\mathrm{17}}^1\times {\mathrm{419}}^1$

素因数の和:462

約数の個数: 60

約数和(自身を含む): 52141320

約数和(自身を除く): 23870133

約数列:

[1, 3, 7, 9, 17, 21, 27, 49, 51, 63, 81, 119, 147, 153, 189, 357, 419, 441, 459, 567, 833, 1071, 1257, 1323, 1377, 2499, 2933, 3213, 3771, 3969, 7123, 7497, 8799, 9639, 11313, 20531, 21369, 22491, 26397, 33939, 49861, 61593, 64107, 67473, 79191, 149583, 184779, 192321, 237573, 349027, 448749, 554337, 576963, 1047081, 1346247, 1663011, 3141243, 4038741, 9423729, 28271187]

約数ペア:

[(1, 28271187), (3, 9423729), (7, 4038741), (9, 3141243), (17, 1663011), (21, 1346247), (27, 1047081), (49, 576963), (51, 554337), (63, 448749), (81, 349027), (119, 237573), (147, 192321), (153, 184779), (189, 149583), (357, 79191), (419, 67473), (441, 64107), (459, 61593), (567, 49861), (833, 33939), (1071, 26397), (1257, 22491), (1323, 21369), (1377, 20531), (2499, 11313), (2933, 9639), (3213, 8799), (3771, 7497), (3969, 7123)]