81872217

素因数分解:

$3^2\times 7^1\times {\mathrm{461}}^1\times {\mathrm{2819}}^1$

素因数の和:3293

約数の個数: 24

約数和(自身を含む): 135495360

約数和(自身を除く): 53623143

約数列:

[1, 3, 7, 9, 21, 63, 461, 1383, 2819, 3227, 4149, 8457, 9681, 19733, 25371, 29043, 59199, 177597, 1299559, 3898677, 9096913, 11696031, 27290739, 81872217]

約数ペア:

[(1, 81872217), (3, 27290739), (7, 11696031), (9, 9096913), (21, 3898677), (63, 1299559), (461, 177597), (1383, 59199), (2819, 29043), (3227, 25371), (4149, 19733), (8457, 9681)]