128691256

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{281}}^1$

素因数の和:460

約数の個数: 64

約数和(自身を含む): 268012800

約数和(自身を除く): 139321544

約数列:

[1, 2, 4, 8, 19, 23, 38, 46, 76, 92, 131, 152, 184, 262, 281, 437, 524, 562, 874, 1048, 1124, 1748, 2248, 2489, 3013, 3496, 4978, 5339, 6026, 6463, 9956, 10678, 12052, 12926, 19912, 21356, 24104, 25852, 36811, 42712, 51704, 57247, 73622, 114494, 122797, 147244, 228988, 245594, 294488, 457976, 491188, 699409, 846653, 982376, 1398818, 1693306, 2797636, 3386612, 5595272, 6773224, 16086407, 32172814, 64345628, 128691256]

約数ペア:

[(1, 128691256), (2, 64345628), (4, 32172814), (8, 16086407), (19, 6773224), (23, 5595272), (38, 3386612), (46, 2797636), (76, 1693306), (92, 1398818), (131, 982376), (152, 846653), (184, 699409), (262, 491188), (281, 457976), (437, 294488), (524, 245594), (562, 228988), (874, 147244), (1048, 122797), (1124, 114494), (1748, 73622), (2248, 57247), (2489, 51704), (3013, 42712), (3496, 36811), (4978, 25852), (5339, 24104), (6026, 21356), (6463, 19912), (9956, 12926), (10678, 12052)]