81007947

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{331}}^1\times {\mathrm{383}}^1$

素因数の和:791

約数の個数: 24

約数和(自身を含む): 119328768

約数和(自身を除く): 38320821

約数列:

[1, 3, 9, 71, 213, 331, 383, 639, 993, 1149, 2979, 3447, 23501, 27193, 70503, 81579, 126773, 211509, 244737, 380319, 1140957, 9000883, 27002649, 81007947]

約数ペア:

[(1, 81007947), (3, 27002649), (9, 9000883), (71, 1140957), (213, 380319), (331, 244737), (383, 211509), (639, 126773), (993, 81579), (1149, 70503), (2979, 27193), (3447, 23501)]