81666257792

素因数分解:

$2^7\times 7^1\times {\mathrm{1279}}^1\times {\mathrm{71263}}^1$

素因数の和:72563

約数の個数: 64

約数和(自身を含む): 186084556800

約数和(自身を除く): 104418299008

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 448, 896, 1279, 2558, 5116, 8953, 10232, 17906, 20464, 35812, 40928, 71263, 71624, 81856, 142526, 143248, 163712, 285052, 286496, 498841, 570104, 572992, 997682, 1140208, 1145984, 1995364, 2280416, 3990728, 4560832, 7981456, 9121664, 15962912, 31925824, 63851648, 91145377, 182290754, 364581508, 638017639, 729163016, 1276035278, 1458326032, 2552070556, 2916652064, 5104141112, 5833304128, 10208282224, 11666608256, 20416564448, 40833128896, 81666257792]

約数ペア:

[(1, 81666257792), (2, 40833128896), (4, 20416564448), (7, 11666608256), (8, 10208282224), (14, 5833304128), (16, 5104141112), (28, 2916652064), (32, 2552070556), (56, 1458326032), (64, 1276035278), (112, 729163016), (128, 638017639), (224, 364581508), (448, 182290754), (896, 91145377), (1279, 63851648), (2558, 31925824), (5116, 15962912), (8953, 9121664), (10232, 7981456), (17906, 4560832), (20464, 3990728), (35812, 2280416), (40928, 1995364), (71263, 1145984), (71624, 1140208), (81856, 997682), (142526, 572992), (143248, 570104), (163712, 498841), (285052, 286496)]