81408128

素因数分解:

$2^7\times {\mathrm{647}}^1\times {\mathrm{983}}^1$

素因数の和:1644

約数の個数: 32

約数和(自身を含む): 162596160

約数和(自身を除く): 81188032

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 647, 983, 1294, 1966, 2588, 3932, 5176, 7864, 10352, 15728, 20704, 31456, 41408, 62912, 82816, 125824, 636001, 1272002, 2544004, 5088008, 10176016, 20352032, 40704064, 81408128]

約数ペア:

[(1, 81408128), (2, 40704064), (4, 20352032), (8, 10176016), (16, 5088008), (32, 2544004), (64, 1272002), (128, 636001), (647, 125824), (983, 82816), (1294, 62912), (1966, 41408), (2588, 31456), (3932, 20704), (5176, 15728), (7864, 10352)]