28787157

素因数分解:

$3^4\times 7^2\times {\mathrm{7253}}^1$

素因数の和:7279

約数の個数: 30

約数和(自身を含む): 50030838

約数和(自身を除く): 21243681

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 7253, 21759, 50771, 65277, 152313, 195831, 355397, 456939, 587493, 1066191, 1370817, 3198573, 4112451, 9595719, 28787157]

約数ペア:

[(1, 28787157), (3, 9595719), (7, 4112451), (9, 3198573), (21, 1370817), (27, 1066191), (49, 587493), (63, 456939), (81, 355397), (147, 195831), (189, 152313), (441, 65277), (567, 50771), (1323, 21759), (3969, 7253)]