128745728

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{16223}}^1$

素因数の和:16270

約数の個数: 36

約数和(自身を含む): 265294848

約数和(自身を除く): 136549120

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 992, 1984, 3968, 7936, 16223, 32446, 64892, 129784, 259568, 502913, 519136, 1005826, 1038272, 2011652, 2076544, 4023304, 4153088, 8046608, 16093216, 32186432, 64372864, 128745728]

約数ペア:

[(1, 128745728), (2, 64372864), (4, 32186432), (8, 16093216), (16, 8046608), (31, 4153088), (32, 4023304), (62, 2076544), (64, 2011652), (124, 1038272), (128, 1005826), (248, 519136), (256, 502913), (496, 259568), (992, 129784), (1984, 64892), (3968, 32446), (7936, 16223)]