28386729

素因数分解:

$3^2\times 7^2\times {\mathrm{59}}^1\times {\mathrm{1091}}^1$

素因数の和:1170

約数の個数: 36

約数和(自身を含む): 48550320

約数和(自身を除く): 20163591

約数列:

[1, 3, 7, 9, 21, 49, 59, 63, 147, 177, 413, 441, 531, 1091, 1239, 2891, 3273, 3717, 7637, 8673, 9819, 22911, 26019, 53459, 64369, 68733, 160377, 193107, 450583, 481131, 579321, 1351749, 3154081, 4055247, 9462243, 28386729]

約数ペア:

[(1, 28386729), (3, 9462243), (7, 4055247), (9, 3154081), (21, 1351749), (49, 579321), (59, 481131), (63, 450583), (147, 193107), (177, 160377), (413, 68733), (441, 64369), (531, 53459), (1091, 26019), (1239, 22911), (2891, 9819), (3273, 8673), (3717, 7637)]