208653904

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{181}}^1\times {\mathrm{661}}^1$

素因数の和:959

約数の個数: 40

約数和(自身を含む): 410850440

約数和(自身を除く): 202196536

約数列:

[1, 2, 4, 8, 16, 109, 181, 218, 362, 436, 661, 724, 872, 1322, 1448, 1744, 2644, 2896, 5288, 10576, 19729, 39458, 72049, 78916, 119641, 144098, 157832, 239282, 288196, 315664, 478564, 576392, 957128, 1152784, 1914256, 13040869, 26081738, 52163476, 104326952, 208653904]

約数ペア:

[(1, 208653904), (2, 104326952), (4, 52163476), (8, 26081738), (16, 13040869), (109, 1914256), (181, 1152784), (218, 957128), (362, 576392), (436, 478564), (661, 315664), (724, 288196), (872, 239282), (1322, 157832), (1448, 144098), (1744, 119641), (2644, 78916), (2896, 72049), (5288, 39458), (10576, 19729)]