20168781

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{313}}^1\times {\mathrm{457}}^1$

素因数の和:820

約数の個数: 16

約数和(自身を含む): 27611904

約数和(自身を除く): 7443123

約数列:

[1, 3, 47, 141, 313, 457, 939, 1371, 14711, 21479, 44133, 64437, 143041, 429123, 6722927, 20168781]

約数ペア:

[(1, 20168781), (3, 6722927), (47, 429123), (141, 143041), (313, 64437), (457, 44133), (939, 21479), (1371, 14711)]