21840026

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{11831}}^1$

素因数の和:11917

約数の個数: 16

約数和(自身を含む): 35779968

約数和(自身を除く): 13939942

約数列:

[1, 2, 13, 26, 71, 142, 923, 1846, 11831, 23662, 153803, 307606, 840001, 1680002, 10920013, 21840026]

約数ペア:

[(1, 21840026), (2, 10920013), (13, 1680002), (26, 840001), (71, 307606), (142, 153803), (923, 23662), (1846, 11831)]