20109278

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{38821}}^1$

素因数の和:38867

約数の個数: 16

約数和(自身を含む): 35405664

約数和(自身を除く): 15296386

約数列:

[1, 2, 7, 14, 37, 74, 259, 518, 38821, 77642, 271747, 543494, 1436377, 2872754, 10054639, 20109278]

約数ペア:

[(1, 20109278), (2, 10054639), (7, 2872754), (14, 1436377), (37, 543494), (74, 271747), (259, 77642), (518, 38821)]