20542768

素因数分解:

$2^4\times {\mathrm{641}}^1\times {\mathrm{2003}}^1$

素因数の和:2652

約数の個数: 20

約数和(自身を含む): 39883608

約数和(自身を除く): 19340840

約数列:

[1, 2, 4, 8, 16, 641, 1282, 2003, 2564, 4006, 5128, 8012, 10256, 16024, 32048, 1283923, 2567846, 5135692, 10271384, 20542768]

約数ペア:

[(1, 20542768), (2, 10271384), (4, 5135692), (8, 2567846), (16, 1283923), (641, 32048), (1282, 16024), (2003, 10256), (2564, 8012), (4006, 5128)]