20172428

素因数分解:

$2^2\times {\mathrm{131}}^1\times {\mathrm{137}}^1\times {\mathrm{281}}^1$

素因数の和:553

約数の個数: 24

約数和(自身を含む): 35958384

約数和(自身を除く): 15785956

約数列:

[1, 2, 4, 131, 137, 262, 274, 281, 524, 548, 562, 1124, 17947, 35894, 36811, 38497, 71788, 73622, 76994, 147244, 153988, 5043107, 10086214, 20172428]

約数ペア:

[(1, 20172428), (2, 10086214), (4, 5043107), (131, 153988), (137, 147244), (262, 76994), (274, 73622), (281, 71788), (524, 38497), (548, 36811), (562, 35894), (1124, 17947)]