20215220

素因数分解:

$2^2\times 5^1\times {\mathrm{677}}^1\times {\mathrm{1493}}^1$

素因数の和:2179

約数の個数: 24

約数和(自身を含む): 42543144

約数和(自身を除く): 22327924

約数列:

[1, 2, 4, 5, 10, 20, 677, 1354, 1493, 2708, 2986, 3385, 5972, 6770, 7465, 13540, 14930, 29860, 1010761, 2021522, 4043044, 5053805, 10107610, 20215220]

約数ペア:

[(1, 20215220), (2, 10107610), (4, 5053805), (5, 4043044), (10, 2021522), (20, 1010761), (677, 29860), (1354, 14930), (1493, 13540), (2708, 7465), (2986, 6770), (3385, 5972)]