21538517

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{21517}}^1$

素因数の和:21548

約数の個数: 16

約数和(自身を含む): 28920192

約数和(自身を除く): 7381675

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 21517, 150619, 236687, 279721, 1656809, 1958047, 3076931, 21538517]

約数ペア:

[(1, 21538517), (7, 3076931), (11, 1958047), (13, 1656809), (77, 279721), (91, 236687), (143, 150619), (1001, 21517)]