20785940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{148471}}^1$

素因数の和:148487

約数の個数: 24

約数和(自身を含む): 49886592

約数和(自身を除く): 29100652

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 148471, 296942, 593884, 742355, 1039297, 1484710, 2078594, 2969420, 4157188, 5196485, 10392970, 20785940]

約数ペア:

[(1, 20785940), (2, 10392970), (4, 5196485), (5, 4157188), (7, 2969420), (10, 2078594), (14, 1484710), (20, 1039297), (28, 742355), (35, 593884), (70, 296942), (140, 148471)]