21185493

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{4649}}^1$

素因数の和:4697

約数の個数: 24

約数和(自身を含む): 33926400

約数和(自身を除く): 12740907

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 217, 651, 1519, 4557, 4649, 13947, 32543, 97629, 144119, 227801, 432357, 683403, 1008833, 3026499, 7061831, 21185493]

約数ペア:

[(1, 21185493), (3, 7061831), (7, 3026499), (21, 1008833), (31, 683403), (49, 432357), (93, 227801), (147, 144119), (217, 97629), (651, 32543), (1519, 13947), (4557, 4649)]