81609856

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:333

約数の個数: 64

約数和(自身を含む): 170184960

約数和(自身を除く): 88575104

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 131, 157, 248, 262, 314, 496, 524, 628, 992, 1048, 1256, 1984, 2096, 2512, 3968, 4061, 4192, 4867, 5024, 8122, 8384, 9734, 10048, 16244, 16768, 19468, 20096, 20567, 32488, 38936, 41134, 64976, 77872, 82268, 129952, 155744, 164536, 259904, 311488, 329072, 519808, 622976, 637577, 658144, 1275154, 1316288, 2550308, 2632576, 5100616, 10201232, 20402464, 40804928, 81609856]

約数ペア:

[(1, 81609856), (2, 40804928), (4, 20402464), (8, 10201232), (16, 5100616), (31, 2632576), (32, 2550308), (62, 1316288), (64, 1275154), (124, 658144), (128, 637577), (131, 622976), (157, 519808), (248, 329072), (262, 311488), (314, 259904), (496, 164536), (524, 155744), (628, 129952), (992, 82268), (1048, 77872), (1256, 64976), (1984, 41134), (2096, 38936), (2512, 32488), (3968, 20567), (4061, 20096), (4192, 19468), (4867, 16768), (5024, 16244), (8122, 10048), (8384, 9734)]