278312384

素因数分解:

$2^6\times 7^1\times {\mathrm{389}}^1\times {\mathrm{1597}}^1$

素因数の和:2005

約数の個数: 56

約数和(自身を含む): 633191520

約数和(自身を除く): 354879136

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 224, 389, 448, 778, 1556, 1597, 2723, 3112, 3194, 5446, 6224, 6388, 10892, 11179, 12448, 12776, 21784, 22358, 24896, 25552, 43568, 44716, 51104, 87136, 89432, 102208, 174272, 178864, 357728, 621233, 715456, 1242466, 2484932, 4348631, 4969864, 8697262, 9939728, 17394524, 19879456, 34789048, 39758912, 69578096, 139156192, 278312384]

約数ペア:

[(1, 278312384), (2, 139156192), (4, 69578096), (7, 39758912), (8, 34789048), (14, 19879456), (16, 17394524), (28, 9939728), (32, 8697262), (56, 4969864), (64, 4348631), (112, 2484932), (224, 1242466), (389, 715456), (448, 621233), (778, 357728), (1556, 178864), (1597, 174272), (2723, 102208), (3112, 89432), (3194, 87136), (5446, 51104), (6224, 44716), (6388, 43568), (10892, 25552), (11179, 24896), (12448, 22358), (12776, 21784)]