28727181

素因数分解:

$3^2\times 7^2\times {\mathrm{65141}}^1$

素因数の和:65161

約数の個数: 18

約数和(自身を含む): 48270222

約数和(自身を除く): 19543041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 65141, 195423, 455987, 586269, 1367961, 3191909, 4103883, 9575727, 28727181]

約数ペア:

[(1, 28727181), (3, 9575727), (7, 4103883), (9, 3191909), (21, 1367961), (49, 586269), (63, 455987), (147, 195423), (441, 65141)]