28749231

素因数分解:

$3^2\times 7^3\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:233

約数の個数: 48

約数和(自身を含む): 49504000

約数和(自身を除く): 20754769

約数列:

[1, 3, 7, 9, 21, 49, 63, 67, 139, 147, 201, 343, 417, 441, 469, 603, 973, 1029, 1251, 1407, 2919, 3087, 3283, 4221, 6811, 8757, 9313, 9849, 20433, 22981, 27939, 29547, 47677, 61299, 65191, 68943, 83817, 143031, 195573, 206829, 429093, 456337, 586719, 1369011, 3194359, 4107033, 9583077, 28749231]

約数ペア:

[(1, 28749231), (3, 9583077), (7, 4107033), (9, 3194359), (21, 1369011), (49, 586719), (63, 456337), (67, 429093), (139, 206829), (147, 195573), (201, 143031), (343, 83817), (417, 68943), (441, 65191), (469, 61299), (603, 47677), (973, 29547), (1029, 27939), (1251, 22981), (1407, 20433), (2919, 9849), (3087, 9313), (3283, 8757), (4221, 6811)]