21721258

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{8111}}^1$

素因数の和:8229

約数の個数: 16

約数和(自身を含む): 35433216

約数和(自身を除く): 13711958

約数列:

[1, 2, 13, 26, 103, 206, 1339, 2678, 8111, 16222, 105443, 210886, 835433, 1670866, 10860629, 21721258]

約数ペア:

[(1, 21721258), (2, 10860629), (13, 1670866), (26, 835433), (103, 210886), (206, 105443), (1339, 16222), (2678, 8111)]