28245789

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1291}}^1$

素因数の和:1338

約数の個数: 48

約数和(自身を含む): 50791104

約数和(自身を除く): 22545315

約数列:

[1, 3, 9, 11, 13, 17, 33, 39, 51, 99, 117, 143, 153, 187, 221, 429, 561, 663, 1287, 1291, 1683, 1989, 2431, 3873, 7293, 11619, 14201, 16783, 21879, 21947, 42603, 50349, 65841, 127809, 151047, 184613, 197523, 241417, 285311, 553839, 724251, 855933, 1661517, 2172753, 2567799, 3138421, 9415263, 28245789]

約数ペア:

[(1, 28245789), (3, 9415263), (9, 3138421), (11, 2567799), (13, 2172753), (17, 1661517), (33, 855933), (39, 724251), (51, 553839), (99, 285311), (117, 241417), (143, 197523), (153, 184613), (187, 151047), (221, 127809), (429, 65841), (561, 50349), (663, 42603), (1287, 21947), (1291, 21879), (1683, 16783), (1989, 14201), (2431, 11619), (3873, 7293)]