28784678

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{503}}^1$

素因数の和:620

約数の個数: 32

約数和(自身を含む): 48771072

約数和(自身を除く): 19986394

約数列:

[1, 2, 13, 26, 31, 62, 71, 142, 403, 503, 806, 923, 1006, 1846, 2201, 4402, 6539, 13078, 15593, 28613, 31186, 35713, 57226, 71426, 202709, 405418, 464269, 928538, 1107103, 2214206, 14392339, 28784678]

約数ペア:

[(1, 28784678), (2, 14392339), (13, 2214206), (26, 1107103), (31, 928538), (62, 464269), (71, 405418), (142, 202709), (403, 71426), (503, 57226), (806, 35713), (923, 31186), (1006, 28613), (1846, 15593), (2201, 13078), (4402, 6539)]