21244408

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{61757}}^1$

素因数の和:61806

約数の個数: 16

約数和(自身を含む): 40760280

約数和(自身を除く): 19515872

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 61757, 123514, 247028, 494056, 2655551, 5311102, 10622204, 21244408]

約数ペア:

[(1, 21244408), (2, 10622204), (4, 5311102), (8, 2655551), (43, 494056), (86, 247028), (172, 123514), (344, 61757)]