81921344

素因数分解:

$2^6\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{263}}^1$

素因数の和:463

約数の個数: 56

約数和(自身を含む): 169517568

約数和(自身を除く): 87596224

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 157, 248, 263, 314, 496, 526, 628, 992, 1052, 1256, 1984, 2104, 2512, 4208, 4867, 5024, 8153, 8416, 9734, 10048, 16306, 16832, 19468, 32612, 38936, 41291, 65224, 77872, 82582, 130448, 155744, 165164, 260896, 311488, 330328, 521792, 660656, 1280021, 1321312, 2560042, 2642624, 5120084, 10240168, 20480336, 40960672, 81921344]

約数ペア:

[(1, 81921344), (2, 40960672), (4, 20480336), (8, 10240168), (16, 5120084), (31, 2642624), (32, 2560042), (62, 1321312), (64, 1280021), (124, 660656), (157, 521792), (248, 330328), (263, 311488), (314, 260896), (496, 165164), (526, 155744), (628, 130448), (992, 82582), (1052, 77872), (1256, 65224), (1984, 41291), (2104, 38936), (2512, 32612), (4208, 19468), (4867, 16832), (5024, 16306), (8153, 10048), (8416, 9734)]