21720128

素因数分解:

$2^6\times {\mathrm{73}}^1\times {\mathrm{4649}}^1$

素因数の和:4734

約数の個数: 28

約数和(自身を含む): 43700700

約数和(自身を除く): 21980572

約数列:

[1, 2, 4, 8, 16, 32, 64, 73, 146, 292, 584, 1168, 2336, 4649, 4672, 9298, 18596, 37192, 74384, 148768, 297536, 339377, 678754, 1357508, 2715016, 5430032, 10860064, 21720128]

約数ペア:

[(1, 21720128), (2, 10860064), (4, 5430032), (8, 2715016), (16, 1357508), (32, 678754), (64, 339377), (73, 297536), (146, 148768), (292, 74384), (584, 37192), (1168, 18596), (2336, 9298), (4649, 4672)]