21087728

素因数分解:

$2^4\times {\mathrm{563}}^1\times {\mathrm{2341}}^1$

素因数の和:2912

約数の個数: 20

約数和(自身を含む): 40947528

約数和(自身を除く): 19859800

約数列:

[1, 2, 4, 8, 16, 563, 1126, 2252, 2341, 4504, 4682, 9008, 9364, 18728, 37456, 1317983, 2635966, 5271932, 10543864, 21087728]

約数ペア:

[(1, 21087728), (2, 10543864), (4, 5271932), (8, 2635966), (16, 1317983), (563, 37456), (1126, 18728), (2252, 9364), (2341, 9008), (4504, 4682)]