128639728

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{991}}^1$

素因数の和:1086

約数の個数: 80

約数和(自身を含む): 305059840

約数和(自身を除く): 176420112

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 61, 76, 112, 122, 133, 152, 244, 266, 304, 427, 488, 532, 854, 976, 991, 1064, 1159, 1708, 1982, 2128, 2318, 3416, 3964, 4636, 6832, 6937, 7928, 8113, 9272, 13874, 15856, 16226, 18544, 18829, 27748, 32452, 37658, 55496, 60451, 64904, 75316, 110992, 120902, 129808, 131803, 150632, 241804, 263606, 301264, 423157, 483608, 527212, 846314, 967216, 1054424, 1148569, 1692628, 2108848, 2297138, 3385256, 4594276, 6770512, 8039983, 9188552, 16079966, 18377104, 32159932, 64319864, 128639728]

約数ペア:

[(1, 128639728), (2, 64319864), (4, 32159932), (7, 18377104), (8, 16079966), (14, 9188552), (16, 8039983), (19, 6770512), (28, 4594276), (38, 3385256), (56, 2297138), (61, 2108848), (76, 1692628), (112, 1148569), (122, 1054424), (133, 967216), (152, 846314), (244, 527212), (266, 483608), (304, 423157), (427, 301264), (488, 263606), (532, 241804), (854, 150632), (976, 131803), (991, 129808), (1064, 120902), (1159, 110992), (1708, 75316), (1982, 64904), (2128, 60451), (2318, 55496), (3416, 37658), (3964, 32452), (4636, 27748), (6832, 18829), (6937, 18544), (7928, 16226), (8113, 15856), (9272, 13874)]