21339140

素因数分解:

$2^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{3797}}^1$

素因数の和:4087

約数の個数: 24

約数和(自身を含む): 44983512

約数和(自身を除く): 23644372

約数列:

[1, 2, 4, 5, 10, 20, 281, 562, 1124, 1405, 2810, 3797, 5620, 7594, 15188, 18985, 37970, 75940, 1066957, 2133914, 4267828, 5334785, 10669570, 21339140]

約数ペア:

[(1, 21339140), (2, 10669570), (4, 5334785), (5, 4267828), (10, 2133914), (20, 1066957), (281, 75940), (562, 37970), (1124, 18985), (1405, 15188), (2810, 7594), (3797, 5620)]