21000718479

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1\times {\mathrm{85297}}^1$

素因数の和:85479

約数の個数: 32

約数和(自身を含む): 30952938240

約数和(自身を除く): 9952219761

約数列:

[1, 3, 13, 39, 59, 107, 177, 321, 767, 1391, 2301, 4173, 6313, 18939, 82069, 85297, 246207, 255891, 1108861, 3326583, 5032523, 9126779, 15097569, 27380337, 65422799, 118648127, 196268397, 355944381, 538479961, 1615439883, 7000239493, 21000718479]

約数ペア:

[(1, 21000718479), (3, 7000239493), (13, 1615439883), (39, 538479961), (59, 355944381), (107, 196268397), (177, 118648127), (321, 65422799), (767, 27380337), (1391, 15097569), (2301, 9126779), (4173, 5032523), (6313, 3326583), (18939, 1108861), (82069, 255891), (85297, 246207)]