19878657

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:233

約数の個数: 32

約数和(自身を含む): 28892160

約数和(自身を除く): 9013503

約数列:

[1, 3, 31, 37, 53, 93, 109, 111, 159, 327, 1147, 1643, 1961, 3379, 3441, 4033, 4929, 5777, 5883, 10137, 12099, 17331, 60791, 125023, 179087, 182373, 213749, 375069, 537261, 641247, 6626219, 19878657]

約数ペア:

[(1, 19878657), (3, 6626219), (31, 641247), (37, 537261), (53, 375069), (93, 213749), (109, 182373), (111, 179087), (159, 125023), (327, 60791), (1147, 17331), (1643, 12099), (1961, 10137), (3379, 5883), (3441, 5777), (4033, 4929)]