20490970

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{55381}}^1$

素因数の和:55425

約数の個数: 16

約数和(自身を含む): 37881288

約数和(自身を除く): 17390318

約数列:

[1, 2, 5, 10, 37, 74, 185, 370, 55381, 110762, 276905, 553810, 2049097, 4098194, 10245485, 20490970]

約数ペア:

[(1, 20490970), (2, 10245485), (5, 4098194), (10, 2049097), (37, 553810), (74, 276905), (185, 110762), (370, 55381)]