21426128

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{757}}^1$

素因数の和:855

約数の個数: 40

約数和(自身を含む): 43706280

約数和(自身を除く): 22280152

約数列:

[1, 2, 4, 8, 16, 29, 58, 61, 116, 122, 232, 244, 464, 488, 757, 976, 1514, 1769, 3028, 3538, 6056, 7076, 12112, 14152, 21953, 28304, 43906, 46177, 87812, 92354, 175624, 184708, 351248, 369416, 738832, 1339133, 2678266, 5356532, 10713064, 21426128]

約数ペア:

[(1, 21426128), (2, 10713064), (4, 5356532), (8, 2678266), (16, 1339133), (29, 738832), (58, 369416), (61, 351248), (116, 184708), (122, 175624), (232, 92354), (244, 87812), (464, 46177), (488, 43906), (757, 28304), (976, 21953), (1514, 14152), (1769, 12112), (3028, 7076), (3538, 6056)]