20691957

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{347}}^1$

素因数の和:513

約数の個数: 32

約数和(自身を含む): 32739840

約数和(自身を除く): 12047883

約数列:

[1, 3, 11, 13, 33, 39, 139, 143, 347, 417, 429, 1041, 1529, 1807, 3817, 4511, 4587, 5421, 11451, 13533, 19877, 48233, 49621, 59631, 144699, 148863, 530563, 627029, 1591689, 1881087, 6897319, 20691957]

約数ペア:

[(1, 20691957), (3, 6897319), (11, 1881087), (13, 1591689), (33, 627029), (39, 530563), (139, 148863), (143, 144699), (347, 59631), (417, 49621), (429, 48233), (1041, 19877), (1529, 13533), (1807, 11451), (3817, 5421), (4511, 4587)]