2811575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:275

約数の個数: 24

約数和(自身を含む): 3864336

約数和(自身を除く): 1052761

約数列:

[1, 5, 13, 25, 41, 65, 205, 211, 325, 533, 1025, 1055, 2665, 2743, 5275, 8651, 13325, 13715, 43255, 68575, 112463, 216275, 562315, 2811575]

約数ペア:

[(1, 2811575), (5, 562315), (13, 216275), (25, 112463), (41, 68575), (65, 43255), (205, 13715), (211, 13325), (325, 8651), (533, 5275), (1025, 2743), (1055, 2665)]