8160740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{821}}^1$

素因数の和:908

約数の個数: 48

約数和(自身を含む): 19885824

約数和(自身を除く): 11725084

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 821, 994, 1420, 1642, 1988, 2485, 3284, 4105, 4970, 5747, 8210, 9940, 11494, 16420, 22988, 28735, 57470, 58291, 114940, 116582, 233164, 291455, 408037, 582910, 816074, 1165820, 1632148, 2040185, 4080370, 8160740]

約数ペア:

[(1, 8160740), (2, 4080370), (4, 2040185), (5, 1632148), (7, 1165820), (10, 816074), (14, 582910), (20, 408037), (28, 291455), (35, 233164), (70, 116582), (71, 114940), (140, 58291), (142, 57470), (284, 28735), (355, 22988), (497, 16420), (710, 11494), (821, 9940), (994, 8210), (1420, 5747), (1642, 4970), (1988, 4105), (2485, 3284)]