18638901

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{709}}^1$

素因数の和:865

約数の個数: 24

約数和(自身を含む): 28354560

約数和(自身を除く): 9715659

約数列:

[1, 3, 9, 23, 69, 127, 207, 381, 709, 1143, 2127, 2921, 6381, 8763, 16307, 26289, 48921, 90043, 146763, 270129, 810387, 2070989, 6212967, 18638901]

約数ペア:

[(1, 18638901), (3, 6212967), (9, 2070989), (23, 810387), (69, 270129), (127, 146763), (207, 90043), (381, 48921), (709, 26289), (1143, 16307), (2127, 8763), (2921, 6381)]