21533211

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{6449}}^1$

素因数の和:6515

約数の個数: 24

約数和(自身を含む): 36223200

約数和(自身を除く): 14689989

約数列:

[1, 3, 7, 9, 21, 53, 63, 159, 371, 477, 1113, 3339, 6449, 19347, 45143, 58041, 135429, 341797, 406287, 1025391, 2392579, 3076173, 7177737, 21533211]

約数ペア:

[(1, 21533211), (3, 7177737), (7, 3076173), (9, 2392579), (21, 1025391), (53, 406287), (63, 341797), (159, 135429), (371, 58041), (477, 45143), (1113, 19347), (3339, 6449)]