20101970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{1361}}^1$

素因数の和:1586

約数の個数: 32

約数和(自身を含む): 41579136

約数和(自身を除く): 21477166

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 211, 422, 1055, 1361, 1477, 2110, 2722, 2954, 6805, 7385, 9527, 13610, 14770, 19054, 47635, 95270, 287171, 574342, 1435855, 2010197, 2871710, 4020394, 10050985, 20101970]

約数ペア:

[(1, 20101970), (2, 10050985), (5, 4020394), (7, 2871710), (10, 2010197), (14, 1435855), (35, 574342), (70, 287171), (211, 95270), (422, 47635), (1055, 19054), (1361, 14770), (1477, 13610), (2110, 9527), (2722, 7385), (2954, 6805)]