28238161

素因数分解:

$7^4\times {\mathrm{19}}^1\times {\mathrm{619}}^1$

素因数の和:666

約数の個数: 20

約数和(自身を含む): 34732400

約数和(自身を除く): 6494239

約数列:

[1, 7, 19, 49, 133, 343, 619, 931, 2401, 4333, 6517, 11761, 30331, 45619, 82327, 212317, 576289, 1486219, 4034023, 28238161]

約数ペア:

[(1, 28238161), (7, 4034023), (19, 1486219), (49, 576289), (133, 212317), (343, 82327), (619, 45619), (931, 30331), (2401, 11761), (4333, 6517)]