28218519

素因数分解:

$3^2\times 7^1\times {\mathrm{307}}^1\times {\mathrm{1459}}^1$

素因数の和:1779

約数の個数: 24

約数和(自身を含む): 46766720

約数和(自身を除く): 18548201

約数列:

[1, 3, 7, 9, 21, 63, 307, 921, 1459, 2149, 2763, 4377, 6447, 10213, 13131, 19341, 30639, 91917, 447913, 1343739, 3135391, 4031217, 9406173, 28218519]

約数ペア:

[(1, 28218519), (3, 9406173), (7, 4031217), (9, 3135391), (21, 1343739), (63, 447913), (307, 91917), (921, 30639), (1459, 19341), (2149, 13131), (2763, 10213), (4377, 6447)]