21439971

素因数分解:

$3^4\times 7^1\times {\mathrm{37813}}^1$

素因数の和:37832

約数の個数: 20

約数和(自身を含む): 36603952

約数和(自身を除く): 15163981

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 37813, 113439, 264691, 340317, 794073, 1020951, 2382219, 3062853, 7146657, 21439971]

約数ペア:

[(1, 21439971), (3, 7146657), (7, 3062853), (9, 2382219), (21, 1020951), (27, 794073), (63, 340317), (81, 264691), (189, 113439), (567, 37813)]