257578256

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{929}}^1$

素因数の和:1024

約数の個数: 80

約数和(自身を含む): 568296960

約数和(自身を除く): 310718704

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 43, 52, 62, 86, 104, 124, 172, 208, 248, 344, 403, 496, 559, 688, 806, 929, 1118, 1333, 1612, 1858, 2236, 2666, 3224, 3716, 4472, 5332, 6448, 7432, 8944, 10664, 12077, 14864, 17329, 21328, 24154, 28799, 34658, 39947, 48308, 57598, 69316, 79894, 96616, 115196, 138632, 159788, 193232, 230392, 277264, 319576, 374387, 460784, 519311, 639152, 748774, 1038622, 1238357, 1497548, 2077244, 2476714, 2995096, 4154488, 4953428, 5990192, 8308976, 9906856, 16098641, 19813712, 32197282, 64394564, 128789128, 257578256]

約数ペア:

[(1, 257578256), (2, 128789128), (4, 64394564), (8, 32197282), (13, 19813712), (16, 16098641), (26, 9906856), (31, 8308976), (43, 5990192), (52, 4953428), (62, 4154488), (86, 2995096), (104, 2476714), (124, 2077244), (172, 1497548), (208, 1238357), (248, 1038622), (344, 748774), (403, 639152), (496, 519311), (559, 460784), (688, 374387), (806, 319576), (929, 277264), (1118, 230392), (1333, 193232), (1612, 159788), (1858, 138632), (2236, 115196), (2666, 96616), (3224, 79894), (3716, 69316), (4472, 57598), (5332, 48308), (6448, 39947), (7432, 34658), (8944, 28799), (10664, 24154), (12077, 21328), (14864, 17329)]