20822140

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{4051}}^1$

素因数の和:4317

約数の個数: 24

約数和(自身を含む): 43907472

約数和(自身を除く): 23085332

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 4051, 5140, 8102, 16204, 20255, 40510, 81020, 1041107, 2082214, 4164428, 5205535, 10411070, 20822140]

約数ペア:

[(1, 20822140), (2, 10411070), (4, 5205535), (5, 4164428), (10, 2082214), (20, 1041107), (257, 81020), (514, 40510), (1028, 20255), (1285, 16204), (2570, 8102), (4051, 5140)]