19764688

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{8887}}^1$

素因数の和:9034

約数の個数: 20

約数和(自身を含む): 38573920

約数和(自身を除く): 18809232

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 8887, 17774, 35548, 71096, 142192, 1235293, 2470586, 4941172, 9882344, 19764688]

約数ペア:

[(1, 19764688), (2, 9882344), (4, 4941172), (8, 2470586), (16, 1235293), (139, 142192), (278, 71096), (556, 35548), (1112, 17774), (2224, 8887)]