28689129

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{9689}}^1$

素因数の和:9749

約数の個数: 24

約数和(自身を含む): 48372480

約数和(自身を除く): 19683351

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 9689, 29067, 67823, 87201, 203469, 455383, 610407, 1366149, 3187681, 4098447, 9563043, 28689129]

約数ペア:

[(1, 28689129), (3, 9563043), (7, 4098447), (9, 3187681), (21, 1366149), (47, 610407), (63, 455383), (141, 203469), (329, 87201), (423, 67823), (987, 29067), (2961, 9689)]