19210009

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{569}}^1$

素因数の和:649

約数の個数: 24

約数和(自身を含む): 24562440

約数和(自身を除く): 5352431

約数列:

[1, 7, 13, 49, 53, 91, 371, 569, 637, 689, 2597, 3983, 4823, 7397, 27881, 30157, 33761, 51779, 211099, 362453, 392041, 1477693, 2744287, 19210009]

約数ペア:

[(1, 19210009), (7, 2744287), (13, 1477693), (49, 392041), (53, 362453), (91, 211099), (371, 51779), (569, 33761), (637, 30157), (689, 27881), (2597, 7397), (3983, 4823)]