19018909

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{409}}^1$

素因数の和:509

約数の個数: 24

約数和(自身を含む): 24211320

約数和(自身を除く): 5192411

約数列:

[1, 7, 13, 49, 73, 91, 409, 511, 637, 949, 2863, 3577, 5317, 6643, 20041, 29857, 37219, 46501, 208999, 260533, 388141, 1462993, 2716987, 19018909]

約数ペア:

[(1, 19018909), (7, 2716987), (13, 1462993), (49, 388141), (73, 260533), (91, 208999), (409, 46501), (511, 37219), (637, 29857), (949, 20041), (2863, 6643), (3577, 5317)]