19964517

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{307}}^1\times {\mathrm{409}}^1$

素因数の和:772

約数の個数: 16

約数和(自身を含む): 27276480

約数和(自身を除く): 7311963

約数列:

[1, 3, 53, 159, 307, 409, 921, 1227, 16271, 21677, 48813, 65031, 125563, 376689, 6654839, 19964517]

約数ペア:

[(1, 19964517), (3, 6654839), (53, 376689), (159, 125563), (307, 65031), (409, 48813), (921, 21677), (1227, 16271)]