21049203824

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2781343}}^1$

素因数の和:2781405

約数の個数: 40

約数和(自身を含む): 45525038592

約数和(自身を除く): 24475834768

約数列:

[1, 2, 4, 8, 11, 16, 22, 43, 44, 86, 88, 172, 176, 344, 473, 688, 946, 1892, 3784, 7568, 2781343, 5562686, 11125372, 22250744, 30594773, 44501488, 61189546, 119597749, 122379092, 239195498, 244758184, 478390996, 489516368, 956781992, 1315575239, 1913563984, 2631150478, 5262300956, 10524601912, 21049203824]

約数ペア:

[(1, 21049203824), (2, 10524601912), (4, 5262300956), (8, 2631150478), (11, 1913563984), (16, 1315575239), (22, 956781992), (43, 489516368), (44, 478390996), (86, 244758184), (88, 239195498), (172, 122379092), (176, 119597749), (344, 61189546), (473, 44501488), (688, 30594773), (946, 22250744), (1892, 11125372), (3784, 5562686), (7568, 2781343)]