20992336

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9439}}^1$

素因数の和:9586

約数の個数: 20

約数和(自身を含む): 40969600

約数和(自身を除く): 19977264

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9439, 18878, 37756, 75512, 151024, 1312021, 2624042, 5248084, 10496168, 20992336]

約数ペア:

[(1, 20992336), (2, 10496168), (4, 5248084), (8, 2624042), (16, 1312021), (139, 151024), (278, 75512), (556, 37756), (1112, 18878), (2224, 9439)]