18564976

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{353}}^1$

素因数の和:553

約数の個数: 40

約数和(自身を含む): 38189520

約数和(自身を除く): 19624544

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 173, 304, 346, 353, 692, 706, 1384, 1412, 2768, 2824, 3287, 5648, 6574, 6707, 13148, 13414, 26296, 26828, 52592, 53656, 61069, 107312, 122138, 244276, 488552, 977104, 1160311, 2320622, 4641244, 9282488, 18564976]

約数ペア:

[(1, 18564976), (2, 9282488), (4, 4641244), (8, 2320622), (16, 1160311), (19, 977104), (38, 488552), (76, 244276), (152, 122138), (173, 107312), (304, 61069), (346, 53656), (353, 52592), (692, 26828), (706, 26296), (1384, 13414), (1412, 13148), (2768, 6707), (2824, 6574), (3287, 5648)]