20658728

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{983}}^1$

素因数の和:1097

約数の個数: 32

約数和(自身を含む): 40383360

約数和(自身を除く): 19724632

約数列:

[1, 2, 4, 8, 37, 71, 74, 142, 148, 284, 296, 568, 983, 1966, 2627, 3932, 5254, 7864, 10508, 21016, 36371, 69793, 72742, 139586, 145484, 279172, 290968, 558344, 2582341, 5164682, 10329364, 20658728]

約数ペア:

[(1, 20658728), (2, 10329364), (4, 5164682), (8, 2582341), (37, 558344), (71, 290968), (74, 279172), (142, 145484), (148, 139586), (284, 72742), (296, 69793), (568, 36371), (983, 21016), (1966, 10508), (2627, 7864), (3932, 5254)]