19783952

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{39887}}^1$

素因数の和:39926

約数の個数: 20

約数和(自身を含む): 39568896

約数和(自身を除く): 19784944

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 39887, 79774, 159548, 319096, 638192, 1236497, 2472994, 4945988, 9891976, 19783952]

約数ペア:

[(1, 19783952), (2, 9891976), (4, 4945988), (8, 2472994), (16, 1236497), (31, 638192), (62, 319096), (124, 159548), (248, 79774), (496, 39887)]