1991899

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1$

素因数の和:139

約数の個数: 24

約数和(自身を含む): 2585520

約数和(自身を除く): 593621

約数列:

[1, 7, 13, 49, 53, 59, 91, 371, 413, 637, 689, 767, 2597, 2891, 3127, 4823, 5369, 21889, 33761, 37583, 40651, 153223, 284557, 1991899]

約数ペア:

[(1, 1991899), (7, 284557), (13, 153223), (49, 40651), (53, 37583), (59, 33761), (91, 21889), (371, 5369), (413, 4823), (637, 3127), (689, 2891), (767, 2597)]