20005016

素因数分解:

$2^3\times {\mathrm{643}}^1\times {\mathrm{3889}}^1$

素因数の和:4538

約数の個数: 16

約数和(自身を含む): 37577400

約数和(自身を除く): 17572384

約数列:

[1, 2, 4, 8, 643, 1286, 2572, 3889, 5144, 7778, 15556, 31112, 2500627, 5001254, 10002508, 20005016]

約数ペア:

[(1, 20005016), (2, 10002508), (4, 5001254), (8, 2500627), (643, 31112), (1286, 15556), (2572, 7778), (3889, 5144)]