28239261

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 41564160

約数和(自身を除く): 13324899

約数列:

[1, 3, 17, 43, 51, 79, 129, 163, 237, 489, 731, 1343, 2193, 2771, 3397, 4029, 7009, 8313, 10191, 12877, 21027, 38631, 57749, 119153, 173247, 218909, 357459, 553711, 656727, 1661133, 9413087, 28239261]

約数ペア:

[(1, 28239261), (3, 9413087), (17, 1661133), (43, 656727), (51, 553711), (79, 357459), (129, 218909), (163, 173247), (237, 119153), (489, 57749), (731, 38631), (1343, 21027), (2193, 12877), (2771, 10191), (3397, 8313), (4029, 7009)]