156720020

素因数分解:

$2^2\times 5^1\times {\mathrm{433}}^1\times {\mathrm{18097}}^1$

素因数の和:18539

約数の個数: 24

約数和(自身を含む): 329890344

約数和(自身を除く): 173170324

約数列:

[1, 2, 4, 5, 10, 20, 433, 866, 1732, 2165, 4330, 8660, 18097, 36194, 72388, 90485, 180970, 361940, 7836001, 15672002, 31344004, 39180005, 78360010, 156720020]

約数ペア:

[(1, 156720020), (2, 78360010), (4, 39180005), (5, 31344004), (10, 15672002), (20, 7836001), (433, 361940), (866, 180970), (1732, 90485), (2165, 72388), (4330, 36194), (8660, 18097)]