21755447

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{829}}^1$

素因数の和:1022

約数の個数: 16

約数和(自身を含む): 26135040

約数和(自身を除く): 4379593

約数列:

[1, 7, 23, 161, 163, 829, 1141, 3749, 5803, 19067, 26243, 133469, 135127, 945889, 3107921, 21755447]

約数ペア:

[(1, 21755447), (7, 3107921), (23, 945889), (161, 135127), (163, 133469), (829, 26243), (1141, 19067), (3749, 5803)]