21672688

素因数分解:

$2^4\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:194

約数の個数: 60

約数和(自身を含む): 46062280

約数和(自身を除く): 24389592

約数列:

[1, 2, 4, 8, 16, 17, 34, 43, 68, 86, 109, 136, 172, 218, 272, 289, 344, 436, 578, 688, 731, 872, 1156, 1462, 1744, 1853, 2312, 2924, 3706, 4624, 4687, 5848, 7412, 9374, 11696, 12427, 14824, 18748, 24854, 29648, 31501, 37496, 49708, 63002, 74992, 79679, 99416, 126004, 159358, 198832, 252008, 318716, 504016, 637432, 1274864, 1354543, 2709086, 5418172, 10836344, 21672688]

約数ペア:

[(1, 21672688), (2, 10836344), (4, 5418172), (8, 2709086), (16, 1354543), (17, 1274864), (34, 637432), (43, 504016), (68, 318716), (86, 252008), (109, 198832), (136, 159358), (172, 126004), (218, 99416), (272, 79679), (289, 74992), (344, 63002), (436, 49708), (578, 37496), (688, 31501), (731, 29648), (872, 24854), (1156, 18748), (1462, 14824), (1744, 12427), (1853, 11696), (2312, 9374), (2924, 7412), (3706, 5848), (4624, 4687)]