21678927

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{5987}}^1$

素因数の和:6078

約数の個数: 16

約数和(自身を含む): 31041792

約数和(自身を除く): 9362865

約数列:

[1, 3, 17, 51, 71, 213, 1207, 3621, 5987, 17961, 101779, 305337, 425077, 1275231, 7226309, 21678927]

約数ペア:

[(1, 21678927), (3, 7226309), (17, 1275231), (51, 425077), (71, 305337), (213, 101779), (1207, 17961), (3621, 5987)]