28012809

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{197}}^1$

素因数の和:381

約数の個数: 32

約数和(自身を含む): 42577920

約数和(自身を除く): 14565111

約数列:

[1, 3, 11, 31, 33, 93, 139, 197, 341, 417, 591, 1023, 1529, 2167, 4309, 4587, 6107, 6501, 12927, 18321, 27383, 47399, 67177, 82149, 142197, 201531, 301213, 848873, 903639, 2546619, 9337603, 28012809]

約数ペア:

[(1, 28012809), (3, 9337603), (11, 2546619), (31, 903639), (33, 848873), (93, 301213), (139, 201531), (197, 142197), (341, 82149), (417, 67177), (591, 47399), (1023, 27383), (1529, 18321), (2167, 12927), (4309, 6501), (4587, 6107)]