21387544

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{24527}}^1$

素因数の和:24642

約数の個数: 16

約数和(自身を含む): 40471200

約数和(自身を除く): 19083656

約数列:

[1, 2, 4, 8, 109, 218, 436, 872, 24527, 49054, 98108, 196216, 2673443, 5346886, 10693772, 21387544]

約数ペア:

[(1, 21387544), (2, 10693772), (4, 5346886), (8, 2673443), (109, 196216), (218, 98108), (436, 49054), (872, 24527)]