21648128

素因数分解:

$2^8\times {\mathrm{103}}^1\times {\mathrm{821}}^1$

素因数の和:940

約数の個数: 36

約数和(自身を含む): 43684368

約数和(自身を除く): 22036240

約数列:

[1, 2, 4, 8, 16, 32, 64, 103, 128, 206, 256, 412, 821, 824, 1642, 1648, 3284, 3296, 6568, 6592, 13136, 13184, 26272, 26368, 52544, 84563, 105088, 169126, 210176, 338252, 676504, 1353008, 2706016, 5412032, 10824064, 21648128]

約数ペア:

[(1, 21648128), (2, 10824064), (4, 5412032), (8, 2706016), (16, 1353008), (32, 676504), (64, 338252), (103, 210176), (128, 169126), (206, 105088), (256, 84563), (412, 52544), (821, 26368), (824, 26272), (1642, 13184), (1648, 13136), (3284, 6592), (3296, 6568)]