28558719

素因数分解:

$3^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{2089}}^1$

素因数の和:2140

約数の個数: 36

約数和(自身を含む): 49558080

約数和(自身を除く): 20999361

約数列:

[1, 3, 7, 9, 21, 31, 49, 63, 93, 147, 217, 279, 441, 651, 1519, 1953, 2089, 4557, 6267, 13671, 14623, 18801, 43869, 64759, 102361, 131607, 194277, 307083, 453313, 582831, 921249, 1359939, 3173191, 4079817, 9519573, 28558719]

約数ペア:

[(1, 28558719), (3, 9519573), (7, 4079817), (9, 3173191), (21, 1359939), (31, 921249), (49, 582831), (63, 453313), (93, 307083), (147, 194277), (217, 131607), (279, 102361), (441, 64759), (651, 43869), (1519, 18801), (1953, 14623), (2089, 13671), (4557, 6267)]