21299019

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53381}}^1$

素因数の和:53410

約数の個数: 16

約数和(自身を含む): 34164480

約数和(自身を除く): 12865461

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 53381, 160143, 373667, 1014239, 1121001, 3042717, 7099673, 21299019]

約数ペア:

[(1, 21299019), (3, 7099673), (7, 3042717), (19, 1121001), (21, 1014239), (57, 373667), (133, 160143), (399, 53381)]