257042992

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{21977}}^1$

素因数の和:22045

約数の個数: 40

約数和(自身を含む): 539603856

約数和(自身を除く): 282560864

約数列:

[1, 2, 4, 8, 16, 17, 34, 43, 68, 86, 136, 172, 272, 344, 688, 731, 1462, 2924, 5848, 11696, 21977, 43954, 87908, 175816, 351632, 373609, 747218, 945011, 1494436, 1890022, 2988872, 3780044, 5977744, 7560088, 15120176, 16065187, 32130374, 64260748, 128521496, 257042992]

約数ペア:

[(1, 257042992), (2, 128521496), (4, 64260748), (8, 32130374), (16, 16065187), (17, 15120176), (34, 7560088), (43, 5977744), (68, 3780044), (86, 2988872), (136, 1890022), (172, 1494436), (272, 945011), (344, 747218), (688, 373609), (731, 351632), (1462, 175816), (2924, 87908), (5848, 43954), (11696, 21977)]