128711919

素因数分解:

$3^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{179}}^1\times {\mathrm{353}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 199825920

約数和(自身を除く): 71114001

約数列:

[1, 3, 7, 21, 97, 179, 291, 353, 537, 679, 1059, 1253, 2037, 2471, 3759, 7413, 17363, 34241, 52089, 63187, 102723, 121541, 189561, 239687, 364623, 442309, 719061, 1326927, 6129139, 18387417, 42903973, 128711919]

約数ペア:

[(1, 128711919), (3, 42903973), (7, 18387417), (21, 6129139), (97, 1326927), (179, 719061), (291, 442309), (353, 364623), (537, 239687), (679, 189561), (1059, 121541), (1253, 102723), (2037, 63187), (2471, 52089), (3759, 34241), (7413, 17363)]