21339380

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{28837}}^1$

素因数の和:28883

約数の個数: 24

約数和(自身を含む): 46025448

約数和(自身を除く): 24686068

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 28837, 57674, 115348, 144185, 288370, 576740, 1066969, 2133938, 4267876, 5334845, 10669690, 21339380]

約数ペア:

[(1, 21339380), (2, 10669690), (4, 5334845), (5, 4267876), (10, 2133938), (20, 1066969), (37, 576740), (74, 288370), (148, 144185), (185, 115348), (370, 57674), (740, 28837)]