1778335

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{251}}^1$

素因数の和:378

約数の個数: 16

約数和(自身を含む): 2328480

約数和(自身を除く): 550145

約数列:

[1, 5, 13, 65, 109, 251, 545, 1255, 1417, 3263, 7085, 16315, 27359, 136795, 355667, 1778335]

約数ペア:

[(1, 1778335), (5, 355667), (13, 136795), (65, 27359), (109, 16315), (251, 7085), (545, 3263), (1255, 1417)]