20658416

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{769}}^1$

素因数の和:873

約数の個数: 40

約数和(自身を含む): 42393120

約数和(自身を除く): 21734704

約数列:

[1, 2, 4, 8, 16, 23, 46, 73, 92, 146, 184, 292, 368, 584, 769, 1168, 1538, 1679, 3076, 3358, 6152, 6716, 12304, 13432, 17687, 26864, 35374, 56137, 70748, 112274, 141496, 224548, 282992, 449096, 898192, 1291151, 2582302, 5164604, 10329208, 20658416]

約数ペア:

[(1, 20658416), (2, 10329208), (4, 5164604), (8, 2582302), (16, 1291151), (23, 898192), (46, 449096), (73, 282992), (92, 224548), (146, 141496), (184, 112274), (292, 70748), (368, 56137), (584, 35374), (769, 26864), (1168, 17687), (1538, 13432), (1679, 12304), (3076, 6716), (3358, 6152)]