21154947

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{9029}}^1$

素因数の和:9114

約数の個数: 16

約数和(自身を含む): 31207680

約数和(自身を除く): 10052733

約数列:

[1, 3, 11, 33, 71, 213, 781, 2343, 9029, 27087, 99319, 297957, 641059, 1923177, 7051649, 21154947]

約数ペア:

[(1, 21154947), (3, 7051649), (11, 1923177), (33, 641059), (71, 297957), (213, 99319), (781, 27087), (2343, 9029)]