28939743

素因数分解:

$3^2\times 7^2\times {\mathrm{137}}^1\times {\mathrm{479}}^1$

素因数の和:636

約数の個数: 36

約数和(自身を含む): 49083840

約数和(自身を除く): 20144097

約数列:

[1, 3, 7, 9, 21, 49, 63, 137, 147, 411, 441, 479, 959, 1233, 1437, 2877, 3353, 4311, 6713, 8631, 10059, 20139, 23471, 30177, 60417, 65623, 70413, 196869, 211239, 459361, 590607, 1378083, 3215527, 4134249, 9646581, 28939743]

約数ペア:

[(1, 28939743), (3, 9646581), (7, 4134249), (9, 3215527), (21, 1378083), (49, 590607), (63, 459361), (137, 211239), (147, 196869), (411, 70413), (441, 65623), (479, 60417), (959, 30177), (1233, 23471), (1437, 20139), (2877, 10059), (3353, 8631), (4311, 6713)]