257430339

素因数分解:

$3^3\times {\mathrm{73}}^1\times {\mathrm{211}}^1\times {\mathrm{619}}^1$

素因数の和:912

約数の個数: 32

約数和(自身を含む): 389062400

約数和(自身を除く): 131632061

約数列:

[1, 3, 9, 27, 73, 211, 219, 619, 633, 657, 1857, 1899, 1971, 5571, 5697, 15403, 16713, 45187, 46209, 130609, 135561, 138627, 391827, 406683, 415881, 1175481, 1220049, 3526443, 9534457, 28603371, 85810113, 257430339]

約数ペア:

[(1, 257430339), (3, 85810113), (9, 28603371), (27, 9534457), (73, 3526443), (211, 1220049), (219, 1175481), (619, 415881), (633, 406683), (657, 391827), (1857, 138627), (1899, 135561), (1971, 130609), (5571, 46209), (5697, 45187), (15403, 16713)]