19780256

素因数分解:

$2^5\times {\mathrm{139}}^1\times {\mathrm{4447}}^1$

素因数の和:4596

約数の個数: 24

約数和(自身を含む): 39231360

約数和(自身を除く): 19451104

約数列:

[1, 2, 4, 8, 16, 32, 139, 278, 556, 1112, 2224, 4447, 4448, 8894, 17788, 35576, 71152, 142304, 618133, 1236266, 2472532, 4945064, 9890128, 19780256]

約数ペア:

[(1, 19780256), (2, 9890128), (4, 4945064), (8, 2472532), (16, 1236266), (32, 618133), (139, 142304), (278, 71152), (556, 35576), (1112, 17788), (2224, 8894), (4447, 4448)]